Allow customizing of blog author image URL documentation (#577)

* Rename authorImage to authorImageURL for clarity

Update documentation

* Fix typo

* Add documentation for authorImageURL

* Add support for authorImage

We will remove support for authorImage in favor of authorImageURL, after we remove authorImage from react-native-website

* Update guides-blog.md

* Update guides-blog.md

docs/guides-blog.md

@@ -32,7 +32,7 @@ authorFBID: 503283835
 title: Introducing Docusaurus
 ---
 
-Lorem Ipusm..
+Lorem Ipsum...
 ```
 
 
@@ -41,8 +41,9 @@ Lorem Ipusm..
 The only required field is `title`; however, we provide options to add author information to your blog post as well.
 
 - `author` - The text label of the author byline.
-- `authorURL` - The url associated with the author. This could be a Twitter, GitHub, Facebook account, etc.
-- `authorFBID` - The Facebook ID that is used to extract the profile picture.
+- `authorURL` - The URL associated with the author. This could be a Twitter, GitHub, Facebook account, etc.
+- `authorFBID` - The Facebook profile ID that is used to fetch the profile picture.
+- `authorImageURL` - The URL to the author's image. (Note: If you use both `authorFBID` and `authorImageURL`, `authorFBID` will take precedence. Don't include `authorFBID` if you want `authorImageURL` to appear.)
 - `title` - The blog post title.
 
 

lib/core/BlogPost.js

@@ -64,6 +64,14 @@ class BlogPost extends React.Component {
           </a>
         </div>
       );
+    } else if (post.authorImageURL) {
+      return (
+        <div className={className}>
+          <a href={post.authorURL} target="_blank" rel="noreferrer noopener">
+            <img src={post.authorImageURL} />
+          </a>
+        </div>
+      );
     } else {
       return null;
     }