Use npx to find the lib on the commmand line

Author: spier

.github/workflows/generate-mindmap.yml

@@ -31,7 +31,7 @@ jobs:
     - name: Run Markmap
       run: npx markmap --no-open --no-toolbar innersource-program-mind-map.md -o innersource-program-mind-map.html
     - name: Screenshot Markmap Website
-      run: pageres innersource-program-mind-map.html --overwrite --filename=innersource-program-mind-map 
+      run: npx pageres innersource-program-mind-map.html --overwrite --filename=innersource-program-mind-map 
     - name: Reduce Screenshot Size (PNG)
       run: npx optipng innersource-program-mind-map.png
     - name: Commit Changes