The desktop-file-valide utility reported the following issues:
```
debian/qbrowser.desktop: hint: value "Qt;Education;Science;Geography;" for key "Categories" in group "Desktop Entry" contains more than one main category; application might appear more than once in the application menu
debian/qbrowser.desktop: error: value "map;globe;postgis;wms;wfs;ogc;osgeo" for locale string list key "Keywords" in group "Desktop Entry" does not have a semicolon (';') as trailing character

debian/qgis.desktop: hint: value "Qt;Education;Science;Geography;" for key "Categories" in group "Desktop Entry" contains more than one main category; application might appear more than once in the application menu
debian/qgis.desktop: error: value "map;globe;postgis;wms;wfs;ogc;osgeo" for locale string list key "Keywords" in group "Desktop Entry" does not have a semicolon (';') as trailing character
```

Only the Keywords syntax error is addressed, the Categories hint is left as-is.