Fix capitalisation of "GitHub" (#9184)

docs/feature_userspace.md

@@ -1,6 +1,6 @@
 # Userspace: Sharing Code Between Keymaps
 
-If you use more than one keyboard with a similar keymap, you might see the benefit in being able to share code between them. Create your own folder in `users/` named the same as your keymap (ideally your github username, `<name>`) with the following structure:
+If you use more than one keyboard with a similar keymap, you might see the benefit in being able to share code between them. Create your own folder in `users/` named the same as your keymap (ideally your GitHub username, `<name>`) with the following structure:
 
 * `/users/<name>/` (added to the path automatically)
   * `readme.md` (optional, recommended)
@@ -73,7 +73,7 @@ The reason for this, is that `<name>.h` won't be added in time to add settings (
 
 ## Readme (`readme.md`)
 
-Please include authorship (your name, github username, email), and optionally [a license that's GPL compatible](https://www.gnu.org/licenses/license-list.html#GPLCompatibleLicenses).
+Please include authorship (your name, GitHub username, email), and optionally [a license that's GPL compatible](https://www.gnu.org/licenses/license-list.html#GPLCompatibleLicenses).
 
 You can use this as a template: 
 ```
@@ -93,7 +93,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ```
 
-You'd want to replace the year, name, email and github username with your info. 
+You'd want to replace the year, name, email and GitHub username with your info. 
 
 Additionally, this is a good place to document your code, if you wish to share it with others.