squash: Minor adjustment of the docs

docs/context.rst

@@ -123,9 +123,10 @@ Values are always converted to a string representation. Each
 value is treated as if it was a component with version. Name of
 the dimension doesn't matter, all are treated equally.
 
-**Values are case-sensitive by default**,
-which means that values like 'centos' and 'CentOS' are considered
-different.
+Values are case-sensitive by default, which means that values like
+``centos`` and ``CentOS`` are considered different. When calling
+the ``adjust()`` method on the tree, ``case_sensitive=False`` can
+be used to make the value comparison case insensitive.
 
 The characters ``:`` or ``.`` or ``-`` are used as version
 separators and are handled in the same way. The following examples