Minor tweak to workflow settings.

There was an (innocently intended, I assume!) "make X great again" joke in a previous commit message, and I'd like this not to be the first thing people see on our GitHub project page, so I added some whitespace to the end of this file.

Apologies to any that were bothered by that, it was an accident!

.github/workflows/main.yml

@@ -54,3 +54,4 @@ jobs:
       run: cmake -B build ${{ matrix.platform.flags }}
     - name: Build
       run: cmake --build build/
+