Move json into PR-only branch

build/main.sh

@@ -16,17 +16,17 @@ else
   cat additions.txt
   echo "------- END ADDITIONS ------"
   LINK_FILE=additions.txt
-fi
 
-echo "checking if /json was changed..."
-egrep "\+{3}\s.\/json\/" diff.txt > json.txt
-if [ $? -eq 0 ]; then
+  echo "checking if /json was changed..."
+  if egrep "\+{3}\s.\/json\/" diff.txt > json.txt; then
     echo "JSON files are auto-generated! Please do not update these files:"
     cat json.txt
     exit 1
-else
+  else
     echo "/json check passed!"
     rm json.txt
+  fi
+
 fi
 
 echo "running format validation..."