fix: mixing %% in strings with substitutions fails lint even with esc…

…apes

- if a string has a substitution and you need a % (so you need \%%),
- then you can do the \%% after the substitution but,
- if you put the \%% before the substition it works on device but fails lint

However,
- if a string has a substitution and you need a %,
- and you have the \%% before or after the %2,
- and you have formatted="false" then it works on device and passes lint

AnkiDroid/src/main/res/values/10-preferences.xml

@@ -26,7 +26,7 @@
         <item quantity="other">%d mins</item>
     </plurals>
     <string comment="Percentage value of a preference. %s represents the number to be replaced. Use \%% to represent a single percent sign (%)"
-        name="pref_summary_percentage">%s\%%</string>
+        formatted="false" name="pref_summary_percentage">%s\%%</string>
     <!-- TODO: move to 20-search-preference so we can contribute upstream (searchpreference_no_results)-->
     <string name="pref_search_no_results">No results</string>