Review notes on component strings.xml files

[Pike]

@flodolo found a couple of nits when doing a review of mozilla-l10n/android-l10n#3.

Copying them over to get traction on them.

We'd like to have better comments on:

What's %s?

android-components/components/browser/engine-system/src/main/res/values/strings.xml

Line 7 in f2fc6a0

<string name="mozac_browser_engine_system_alert_title">The page at %1$s says:</string>

android-components/components/ui/tabcounter/src/main/res/values/strings.xml

Line 2 in f2fc6a0

<string name="mozac_ui_tabcounter_description">Tab Counter</string>

Proper apostrophe in

android-components/components/feature/sitepermissions/src/main/res/values/strings.xml

Lines 37 to 42 in f2fc6a0

	<!-- Text for a negative button in a permission request dialog, this button will do not give
	access to this permission-->
	<string name="mozac_feature_sitepermissions_not_allow">Don\'t allow</string>
	<!-- Text for a checkbox in a permission request dialog, this will allow to not show again the prompt-->
	<string name="mozac_feature_sitepermissions_do_not_ask_again_on_this_site">Don\'t ask again on this site</string>

Adding both here, @Delphine filed #2426 for the second one.

@flodolo, did you have more?

┆Issue is synchronized with this Jira Task

[flodolo]

There are a few "Web" uppercase, e.g. "Web browsing", that should probably be lowercase.

But I realize these come from Firefox, and I'm not sure if someone actually wants to fix.