Docs for maintainer notes field

docs/fdroid.texi

@@ -468,6 +468,7 @@ The following sections describe the fields recognised within the file.
 * Litecoin::
 * Summary::
 * Description::
+* Maintainer Notes::
 * Repo Type::
 * Repo::
 * Build Version::
@@ -678,6 +679,17 @@ app is in rapid development or whether the latest version lags behind the
 current version; whether the app supports multiple architectures or whether 
 there is a maximum SDK specified (such info not being recorded in the index).
 
+@node Maintainer Notes
+@section Maintainer Notes
+
+@cindex Maintainer Notes
+
+This is a multi-line field using the same rules and syntax as the description.
+It's used to record notes for F-Droid maintainers to assist in maintaining and
+updating the application in the repository.
+
+This information is also published to the wiki.
+
 @node Repo Type
 @section Repo Type