docs: CLI commands link fix (#546)

This PR fixes a "Page not found exception" for the CLI commands in the
"Update Entrypoint" section of KubeOps readme.md.
[CLI
Commands](https://github.com/buehler/dotnet-operator-sdk/blob/master/src/KubeOps/commands.md)
link.

src/KubeOps/README.md

@@ -73,7 +73,7 @@ public static class Program
 ```
 
 This adds the default commands (like run and the code generators) to your app.
-The commands are documentated under the [CLI Commands](./commands.md) section.
+The commands are documentated under the [CLI Commands](#commands) section.
 
 > Technically you don't need to replace the function,
 > but if you don't, the other commands like yaml generation