IC:2021-04-20, Adds "if" to duplicate check

Author: astrogeco

.github/workflows/build-documentation.yml

@@ -73,6 +73,7 @@ jobs:
   build-usersguide:
     # Name the Job
     needs: checks-for-duplicates
+    if: ${{ needs.checks-for-duplicates.outputs.should_skip != 'true' }}
     name: Users Guide
     # Set the type of machine to run on
     runs-on: ubuntu-18.04
@@ -156,6 +157,7 @@ jobs:
   build-osalguide:
     # Name the Job
     needs: checks-for-duplicates
+    if: ${{ needs.checks-for-duplicates.outputs.should_skip != 'true' }}    
     name: Osal Guide
     # Set the type of machine to run on
     runs-on: ubuntu-18.04