docs: #236 instruct user to gitignore the cache

Add gitignore instructions to quickstart documentations

docs/quickstart/cli.mdx

@@ -62,6 +62,15 @@ Next, we execute the `content-collections build` command prior to our regular `b
 </div>
 <div className="step">
 
+Add the new `.content-collections` directory to your project's `.gitignore` file — the files in this directory are always regenerated and can be safely ignored by Git.
+
+```
+.content-collections
+```
+
+</div>
+<div className="step">
+
 Create a `content-collections.ts` file at the root of your project:
 
 ```ts

docs/quickstart/next.mdx

@@ -61,6 +61,15 @@ For more details on the Next.js adapter, refer to the [documentation](/docs/adap
 </div>
 <div className="step">
 
+Add the new `.content-collections` directory to your project's `.gitignore` file — the files in this directory are always regenerated and can be safely ignored by Git.
+
+```
+.content-collections
+```
+
+</div>
+<div className="step">
+
 Create a `content-collections.ts` file at the root of your project:
 
 ```ts

docs/quickstart/qwik.mdx

@@ -66,6 +66,15 @@ For more details on the vide adapter, refer to the [documentation](/docs/adapter
 </div>
 <div className="step">
 
+Add the new `.content-collections` directory to your project's `.gitignore` file — the files in this directory are always regenerated and can be safely ignored by Git.
+
+```
+.content-collections
+```
+
+</div>
+<div className="step">
+
 Create a `content-collections.ts` file at the root of your project:
 
 ```ts

docs/quickstart/remix-vite.mdx

@@ -62,6 +62,15 @@ For more details on the Remix adapter, refer to the [documentation](/docs/adapte
 </div>
 <div className="step">
 
+Add the new `.content-collections` directory to your project's `.gitignore` file — the files in this directory are always regenerated and can be safely ignored by Git.
+
+```
+.content-collections
+```
+
+</div>
+<div className="step">
+
 Create a `content-collections.ts` file at the root of your project:
 
 ```ts

docs/quickstart/solid-start.mdx

@@ -61,6 +61,15 @@ For more details on the SolidStart adapter, refer to the [documentation](/docs/a
 </div>
 <div className="step">
 
+Add the new `.content-collections` directory to your project's `.gitignore` file — the files in this directory are always regenerated and can be safely ignored by Git.
+
+```
+.content-collections
+```
+
+</div>
+<div className="step">
+
 Create a `content-collections.ts` file at the root of your project:
 
 ```ts

docs/quickstart/svelte-kit.mdx

@@ -61,6 +61,15 @@ For more details on the vide adapter, refer to the [documentation](/docs/adapter
 </div>
 <div className="step">
 
+Add the new `.content-collections` directory to your project's `.gitignore` file — the files in this directory are always regenerated and can be safely ignored by Git.
+
+```
+.content-collections
+```
+
+</div>
+<div className="step">
+
 Create a `content-collections.ts` file at the root of your project:
 
 ```ts

docs/quickstart/vite.mdx

@@ -58,6 +58,15 @@ For more details on the vide adapter, refer to the [documentation](/docs/adapter
 </div>
 <div className="step">
 
+Add the new `.content-collections` directory to your project's `.gitignore` file — the files in this directory are always regenerated and can be safely ignored by Git.
+
+```
+.content-collections
+```
+
+</div>
+<div className="step">
+
 Create a `content-collections.ts` file at the root of your project:
 
 ```ts