chore: fix some typos in comment (#15485)

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### What does this PR try to resolve?

 fix some typos in comment

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Author: weihanglo

src/cargo/core/compiler/mod.rs

@@ -1488,7 +1488,7 @@ fn check_cfg_args(unit: &Unit) -> Vec<OsString> {
     arg_feature.push("))");
 
     // In addition to the package features, we also include the `test` cfg (since
-    // compiler-team#785, as to be able to someday apply yt conditionaly), as well
+    // compiler-team#785, as to be able to someday apply yt conditionally), as well
     // the `docsrs` cfg from the docs.rs service.
     //
     // We include `docsrs` here (in Cargo) instead of rustc, since there is a much closer

src/cargo/util/toml_mut/manifest.rs

@@ -452,7 +452,7 @@ impl LocalManifest {
         Ok(())
     }
 
-    /// Allow mutating depedencies, wherever they live.
+    /// Allow mutating dependencies, wherever they live.
     /// Copied from cargo-edit.
     pub fn get_dependency_tables_mut(
         &mut self,

src/doc/src/reference/unstable.md

@@ -264,7 +264,7 @@ The path to where internal files used as part of the build are placed.
 
 This option supports path templating.
 
-Avaiable template variables:
+Available template variables:
 * `{workspace-root}` resolves to root of the current workspace.
 * `{cargo-cache-home}` resolves to `CARGO_HOME`
 * `{workspace-path-hash}` resolves to a hash of the manifest path

tests/testsuite/build_script.rs

@@ -5420,7 +5420,7 @@ fn rerun_if_published_directory() {
 
     p.cargo("check").run();
 
-    // Delete regitry src to make directories being recreated with the latest timestamp.
+    // Delete registry src to make directories being recreated with the latest timestamp.
     cargo_home().join("registry/src").rm_rf();
 
     p.cargo("check --verbose")