Consolidate interpolated string tutorials (#46013)

* Consolidate interpolated string tutorials

There were three very similar tutorials on interpolated strings. Combine them into one article.

Fixes #46012

This is worth doing regardless of the outcome of the discussion regarding the new warnings.

* warnings, part 1

* fix warnings

* fix warnings and proofread

* one more bit of warnings

Author: BillWagner

.openpublishing.redirection.csharp.json

@@ -4042,12 +4042,12 @@
         },
         {
             "source_path_from_root": "/docs/csharp/quick-starts/interpolated-strings-local.md",
-            "redirect_url": "/dotnet/csharp/tutorials/exploration/interpolated-strings-local",
-            "redirect_document_id": true
+            "redirect_url": "/dotnet/csharp/tutorials/string-interpolation"
         },
         {
-            "source_path_from_root": "/docs/csharp/quick-starts/interpolated-strings.md",
-            "redirect_url": "/dotnet/csharp/tutorials/exploration/interpolated-strings"
+            "source_path_from_root": "/docs/csharp/quick-starts/interpolated-strings.yml",
+            "redirect_url": "/dotnet/csharp/tutorials/string-interpolation",
+            "redirect_document_id": true
         },
         {
             "source_path_from_root": "/docs/csharp/quick-starts/introduction-to-classes.md",
@@ -4060,7 +4060,7 @@
         },
         {
             "source_path_from_root": "/docs/csharp/quick-starts/local-environment.md",
-            "redirect_url": "/dotnet/csharp/tour-of-csharp/tutorials",
+            "redirect_url": "/dotnet/csharp/tour-of-csharp/tutorials/",
             "redirect_document_id": true
         },
         {
@@ -4208,6 +4208,14 @@
             "source_path_from_root": "/docs/csharp/tutorials/exploration/top-level-statements.md",
             "redirect_url": "/dotnet/csharp/tutorials/top-level-statements"
         },
+        {
+            "source_path_from_root": "/docs/csharp/tutorials/exploration/interpolated-strings-local.md",
+            "redirect_url": "/dotnet/csharp/tutorials/string-interpolation"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/tutorials/exploration/interpolated-strings.yml",
+            "redirect_url": "/dotnet/csharp/tutorials/string-interpolation"
+        },
         {
             "source_path_from_root": "/docs/csharp/tutorials/generate-consume-asynchronous-stream.md",
             "redirect_url": "/dotnet/csharp/asynchronous-programming/generate-consume-asynchronous-stream"
@@ -4242,11 +4250,11 @@
         },
         {
             "source_path_from_root": "/docs/csharp/tutorials/intro-to-csharp/interpolated-strings-local.md",
-            "redirect_url": "/dotnet/csharp/tutorials/exploration/interpolated-strings-local"
+            "redirect_url": "/dotnet/csharp/tutorials/interpolated-strings"
         },
         {
             "source_path_from_root": "/docs/csharp/tutorials/intro-to-csharp/interpolated-strings.yml",
-            "redirect_url": "/dotnet/csharp/tutorials/exploration/interpolated-strings"
+            "redirect_url": "/dotnet/csharp/tutorials/interpolated-strings"
         },
         {
             "source_path_from_root": "/docs/csharp/tutorials/intro-to-csharp/introduction-to-classes.md",

docs/csharp/language-reference/tokens/interpolated.md

@@ -88,7 +88,7 @@ For more information about custom formatting, see the [Custom formatting with IC
 
 ## Other resources
 
-If you're new to string interpolation, see the [String interpolation in C#](../../tutorials/exploration/interpolated-strings.yml) interactive tutorial. You can also check another [String interpolation in C#](../../tutorials/string-interpolation.md) tutorial. That tutorial demonstrates how to use interpolated strings to produce formatted strings.
+If you're new to string interpolation, see the [String interpolation in C#](../../tutorials/string-interpolation.md) interactive tutorial. That tutorial demonstrates how to use interpolated strings to produce formatted strings.
 
 ## Compilation of interpolated strings
 

docs/csharp/programming-guide/strings/index.md

@@ -106,7 +106,7 @@ A format string is a string whose contents are determined dynamically at run tim
 
 ### String interpolation
 
-You declare [*Interpolated strings*](../../language-reference/tokens/interpolated.md) with the `$` special character. An interpolated string includes interpolated expressions in braces. If you're new to string interpolation, see the [String interpolation - C# interactive tutorial](../../tutorials/exploration/interpolated-strings.yml) for a quick overview.
+You declare [*Interpolated strings*](../../language-reference/tokens/interpolated.md) with the `$` special character. An interpolated string includes interpolated expressions in braces. If you're new to string interpolation, see the [String interpolation - C# tutorial](../../tutorials/string-interpolation.md) for several examples.
 
 Use string interpolation to improve the readability and maintainability of your code. String interpolation achieves the same results as the `String.Format` method, but is easier to use and improves inline clarity.
 

docs/csharp/toc.yml

@@ -186,13 +186,9 @@ items:
     href: tutorials/ranges-indexes.md
   - name: Work with nullable reference types
     href: tutorials/nullable-reference-types.md
-  - name: Explore string interpolation - interactive
-    href: tutorials/exploration/interpolated-strings.yml
-  - name: Explore string interpolation - in your environment
-    href: tutorials/exploration/interpolated-strings-local.md
   - name: Explore patterns in objects
     href: tutorials/patterns-objects.md
-  - name: Advanced scenarios for string Interpolation
+  - name: String interpolation
     href: tutorials/string-interpolation.md
   - name: Console Application
     href: tutorials/console-teleprompter.md