Updated MDX files to make all titles sentence case (#709)

Author: LDraco-Sharif

src/routes/advanced-concepts/fine-grained-reactivity.mdx

@@ -1,5 +1,5 @@
 ---
-title: Fine-Grained Reactivity
+title: Fine-grained reactivity
 ---
 
 Reactivity ensures automatic responses to data changes, eliminating the need for manual updates to the user interface (UI).
@@ -15,7 +15,7 @@ Through targeting only the areas of an application that have changed the user ex
 
 **Note:** If you're new to the concept of reactivity and want to learn the basics, consider starting with our [intro to reactivity guide](/concepts/intro-to-reactivity).
 
-## Reactive Primitives
+## Reactive primitives
 
 In Solid's reactivity system, there are two key elements: signals and observers.
 These core elements serve as the foundation for more specialized reactive features:

src/routes/concepts/components/basics.mdx

@@ -176,7 +176,7 @@ To simplify conditional rendering, Solid provides built-in [control-flow](/conce
 For components to be reusable, they need to be exported from one module and imported into another.
 This allows for components to be shared and used where needed.
 
-### Exporting Components
+### Exporting components
 
 Once defined, a component can be [exported](https://developer.mozilla.org/en-US/docs/web/javascript/reference/statements/export) to make it available for use in other parts of your application.
 There are two ways to export a component: [named exports](https://developer.mozilla.org/en-US/docs/web/javascript/reference/statements/export#named_exports) and [default exports](https://developer.mozilla.org/en-US/docs/web/javascript/reference/statements/export#default_exports).
@@ -212,7 +212,7 @@ export default function MyComponent() {
 }
 ```
 
-### Importing Components
+### Importing components
 
 To use a component in another file or component, it must be [imported](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import).
 To import a component, you must specify the path to the file containing the component and the name of the component to import.

src/routes/concepts/components/class-style.mdx

@@ -1,12 +1,12 @@
 ---
-title: Class and Style
+title: Class and style
 order: 2
 ---
 
 Similar to HTML, Solid uses `class` and `style` attributes to style elements via [CSS (Cascading Style Sheets)](https://developer.mozilla.org/en-US/docs/Glossary/CSS).
 
-- **Class Attribute**: Enables styling one or more elements through CSS rules.
-- **Style Attribute**: Inline styles that style single elements.
+- **Class attribute**: Enables styling one or more elements through CSS rules.
+- **Style attribute**: Inline styles that style single elements.
 
 ## Inline styling
 

src/routes/concepts/components/event-handlers.mdx

@@ -1,5 +1,5 @@
 ---
-title: Event Handlers
+title: Event handlers
 order: 3
 ---
 
@@ -58,7 +58,7 @@ In this example, the `Hello!` string is passed as the `data` parameter in the `h
 
 By binding events in this way, Solid avoids the overhead of using JavaScript's [bind](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_objects/Function/bind) method and adding an additional closure.
 
-### Dynamic Handlers
+### Dynamic handlers
 
 An event handler does not form part of the reactive system.
 If you were to pass the handler as a signal, it will not respond to the changes of that signal.
@@ -190,7 +190,7 @@ button
 
 </Callout>
 
-### List of Delegated Events
+### List of delegated events
 
 You can also view this list in our [source code](https://github.com/ryansolid/dom-expressions/blob/main/packages/dom-expressions/src/constants.js) (see `DelegatedEvents`).
 

src/routes/concepts/control-flow/conditional-rendering.mdx

@@ -1,5 +1,5 @@
 ---
-title: "Conditional Rendering"
+title: "Conditional rendering"
 order: 1
 ---
 

src/routes/concepts/control-flow/list-rendering.mdx

@@ -1,5 +1,5 @@
 ---
-title: "List Rendering"
+title: "List rendering"
 order: 3
 ---
 

src/routes/concepts/intro-to-reactivity.mdx

@@ -1,5 +1,5 @@
 ---
-title: "Intro to Reactivity"
+title: "Intro to reactivity"
 order: 1
 ---
 

src/routes/configuration/environment-variables.mdx

@@ -1,5 +1,5 @@
 ---
-title: Environment Variables
+title: Environment variables
 ---
 
 Solid is built on top of [Vite](https://vitejs.dev/), which offers a convenient way to handle environment variables.

src/routes/guides/complex-state-management.mdx

@@ -1,5 +1,5 @@
 ---
-title: Complex State Management
+title: Complex state management
 order: 5
 ---
 

src/routes/guides/deploying-your-app.mdx

@@ -1,5 +1,5 @@
 ---
-title: Deploying your App
+title: Deploying your app
 order: 6
 ---