chore: fix readme typo (filebrowser#1128)

Commander runner -> Command runner
At other places it's referenced as Command runner.

Author: liubsp

README.md

@@ -24,7 +24,7 @@ For installation instructions please refer to our docs at [https://filebrowser.o
 
 [Authentication Method](https://filebrowser.org/configuration/authentication-method) - You can change the way the user authenticates with the filebrowser server
 
-[Commander Runner](https://filebrowser.org/configuration/command-runner) - The command runner is a feature that enables you to execute any shell command you want before or after a certain event.
+[Command Runner](https://filebrowser.org/configuration/command-runner) - The command runner is a feature that enables you to execute any shell command you want before or after a certain event.
 
 [Custom Branding](https://filebrowser.org/configuration/custom-branding) - You can customize your File Browser installation by change its name to any other you want, by adding a global custom style sheet and by using your own logotype if you want.