[doc] Fix option_*() migration commands in doc
The function signature in the doc is not the same as in the code. Also option_removed should probably be removed from the doc since the function in migration.py is empty
--- a/doc/book/devrepo/migration.rst Wed May 03 21:58:48 2017 +0200
+++ b/doc/book/devrepo/migration.rst Fri Jul 28 08:35:01 2017 +0000
@@ -197,9 +197,9 @@
* `option_group_change(option, oldgroup, newgroup)`, indicates that an option does not
belong anymore to the same group.
-* `option_added(oldname, newname)`, indicates that an option has been added.
+* `option_added(option)`, indicates that an option has been added.
-* `option_removed(oldname, newname)`, indicates that an option has been deleted.
+* `option_removed(option)`, indicates that an option has been deleted.
The `config` variable is an object which can be used to access the
configuration values, for reading and updating, with a dictionary-like