Fix spelling and grammar issues in documentation (#1434)

* Update quickstart.mdx

* Update api-playground/overview.mdx

* Update organize/navigation.mdx

---------

Co-authored-by: mintlify-development[bot] <109878554+mintlify-development[bot]@users.noreply.github.com>
Co-authored-by: Ethan Palm <[email protected]>

Author: mintlify-development[bot]

organize/navigation.mdx

@@ -250,7 +250,7 @@ In the `navigation` object, `anchors` is an array where each entry is an object
 
 For anchors that direct to external links only, use the `global` keyword. Anchors in a `global` object must have an `href` field and cannot point to a relative path. 
 
-Global anchors are particularly useful for linking to resources that are not part of your documentation, but should be readily accessible to your users like a blog or support portal
+Global anchors are particularly useful for linking to resources that are not part of your documentation, but should be readily accessible to your users like a blog or support portal.
 
 ```json
 {

quickstart.mdx

@@ -188,7 +188,7 @@ When you're satisfied with your edits, select the **Publish** button in the top-
   Use branches to preview and review changes through pull requests before deploying to your live site.
 </Tip>
 
-For more details about using the web editor, including using branches and pull requests to collaborate and preview changes, see our [web editor documentation](/editor/getting-started).
+For more details about using the web editor, including using branches and pull requests to collaborate and preview changes, see our [web editor documentation](/editor).
 
 ## Adding a custom domain