odpi#116 update dirtyreload tips from review comments

Signed-off-by: Nigel Jones <nigel.l.jones+git@gmail.com>

site/docs/guides/documentation/guide.md

@@ -36,7 +36,7 @@ When contributing to the documentation, you can easily use this to test document
     To speed this up to a second or two, use the `--dirtyreload` flag to `mkdocs serve`.
 
     Note that any deleted pages will not be removed, and some links may break as a result that would otherwise work with a full reload (i.e. navigation structure changes).
-    [Release notes](https://www.mkdocs.org/about/release-notes/#support-for-dirty-builds-990) for the feature have further information.
+    See [Release notes](https://www.mkdocs.org/about/release-notes/#support-for-dirty-builds-990) for further information.
 
 !!! warning "Special handling of index.md"
     Be aware that the specific theme we use will treat every `index.md` as an index page for a section: these behave in special ways depending on the level of the navigation in which they appear. Unless you mean to create an overview of some section of the navigation, do **not** name your Markdown file `index.md`.