tests: ensure mocked data and svg verification [skip ci]

source/plugins/wakatime/README.md

@@ -49,6 +49,7 @@ uses: lowlighter/metrics@latest
 with:
   filename: metrics.plugin.wakatime.svg
   token: NOT_NEEDED
+  base: ''
   plugin_wakatime: 'yes'
   plugin_wakatime_sections: time, projects, projects-graphs, languages, languages-graphs, editors, os
   plugin_wakatime_token: ${{ secrets.WAKATIME_TOKEN }}

source/plugins/wakatime/examples.yml

@@ -3,6 +3,7 @@
   with:
     filename: metrics.plugin.wakatime.svg
     token: NOT_NEEDED
+    base: ""
     plugin_wakatime: yes
     plugin_wakatime_sections: time, projects, projects-graphs, languages, languages-graphs, editors, os
     plugin_wakatime_token: ${{ secrets.WAKATIME_TOKEN }}