Fix #331, Skip deploy job instead of step

Moves the if condition up one level from the deploy step to the deploy
job for both the deploy-usersguide and deploy-osalguide.

Author: astrogeco

.github/workflows/build-documentation.yml

@@ -153,11 +153,10 @@ jobs:
           key: usersguide-buildnum-${{ github.run_number }}
 
   deploy-usersguide:
-    needs: build-usersguide
-    # Name the Job
     name: Deploy Users Guide
-    # Set the type of machine to run on
     runs-on: ubuntu-18.04
+    needs: build-usersguide    
+    if: ${{ github.event_name == 'push' && contains(github.ref, 'main')}}
 
     steps:
       - name: Cache cFS Build Environment for usersguide
@@ -258,6 +257,7 @@ jobs:
     needs: build-osalguide
     name: Deploy Osal Guide
     runs-on: ubuntu-18.04
+    if: ${{ github.event_name == 'push' && contains(github.ref, 'main')}}
 
     steps:
       - name: Cache cFS Build Environment for osalguide
@@ -268,11 +268,11 @@ jobs:
           key: osalguide-buildnum-${{ github.run_number }}
 
       - name: Deploy to GitHub
-        if: ${{ github.event_name == 'push' && contains(github.ref, 'main')}}
         uses: JamesIves/github-pages-deploy-action@3.7.1
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           BRANCH: gh-pages
           FOLDER: deploy
           CLEAN: false
           SINGLE_COMMIT: true
+