Use more common term "quotes" (TYPO3-Documentation#4829)

* [TASK] Use more common term "quotes"

* Write single quotes

---------

Co-authored-by: Lina Wolf <48202465+linawolf@users.noreply.github.com>

Documentation/ApiOverview/SiteHandling/SiteSets.rst

@@ -65,8 +65,8 @@ Line 3-6: Settings
     Define settings for the website
     **Never** nest settings with a dot! e.g. `website.background.color`
     Otherwise the new settings definitions will not work later.
-    If a setting contains special characters or spaces, it is recommended to
-    wrap the value in inverted commas. You can also define settings in a
+    If a setting value contains special characters or spaces, it is recommended to
+    wrap the value in single quotes. You can also define settings in a
     separate file :file:`settings.yaml`. See section below.
 Line 7: Dependencies
     Load :file:`setup.typoscript`, :file:`constants.typoscript`,