Fix hashdir release notes snippet wording

releng/release-notes-next/hashdir.feature

@@ -1,7 +1,7 @@
 A new option `hashdir` has been [added][PR#1399] to the ccache plugin. Setting
-it to false the build working directory from the hash used to distinguish two
-compilations when generating debuginfo. While this allows the compiler cache
-to be shared across different package NEVRs, it might cause the debuginfo to be
-incorrect.
+it to `False` excludes the build working directory from the hash used to
+distinguish two compilations when generating debuginfo. While this allows the
+compiler cache to be shared across different package NEVRs, it might cause the
+debuginfo to be incorrect.
 The option can be used for issue bisecting if running the debugger is
 unnecessary. ([issue#1395][])