Update build.yml

Author: Sploder-Saptarshi

.github/workflows/build.yml

@@ -68,11 +68,13 @@ jobs:
           run: echo "/snap/bin" >> $GITHUB_PATH
 
         - name: Run build script on Linux
+          if: runner.os == 'Linux'
           run: npx yarn dist
           env:
             PATH: ./node_modules/.bin:$PATH
 
         - name: Run build script on Windows
+          if: runner.os == 'Windows'
           run: build.bat
           env:
             PATH: ./node_modules/.bin:$PATH