github action; manual build; fix yml spacing (#653)

Author: nerdCopter

.github/workflows/manual-build.yml

@@ -5,7 +5,7 @@ on:
   workflow_dispatch:
     inputs:
       debug_build:
-      description: 'Specifies if it is a debug build or a release build'
+        description: 'Specifies if it is a debug build or a release build'
         default: true
         required: false
         type: boolean