DOC: fix erroneous numpydoc_edit_link formatting (#309)

* fix format: add linebreak

* consistent indent

* add deprecation version arg to numpydoc_edit_link

* add blank line after directive

Author: sappelhoff

doc/install.rst

@@ -77,26 +77,28 @@ numpydoc_xref_aliases : dict
   This option depends on the ``numpydoc_xref_param_type`` option
   being ``True``.
 numpydoc_xref_ignore : set or ``"all"``
-    How to handle terms not in ``numpydoc_xref_aliases`` when
-    ``numpydoc_xref_aliases=True``. The value can either be a ``set`` 
-    containing terms to ignore, or ``"all"``. In the former case, the set
-    contains words not to cross-reference. Most likely, these are common words
-    used in parameter type descriptions that may be confused for
-    classes of the same name. For example::
-
-        numpydoc_xref_ignore = {'type', 'optional', 'default'}
-
-    The default is an empty set.
-
-    If the ``numpydoc_xref_ignore="all"``, then all unrecognized terms are
-    ignored, i.e. terms not in ``numpydoc_xref_aliases`` are *not* wrapped in
-    ``:obj:`` roles.
-    This configuration parameter may be useful if you only want create
-    cross references for a small number of terms. In this case, including the
-    desired cross reference mappings in ``numpydoc_xref_aliases`` and setting
-    ``numpydoc_xref_ignore="all"`` is more convenient than explicitly listing
-    terms to ignore in a set.
+  How to handle terms not in ``numpydoc_xref_aliases`` when
+  ``numpydoc_xref_aliases=True``. The value can either be a ``set``
+  containing terms to ignore, or ``"all"``. In the former case, the set
+  contains words not to cross-reference. Most likely, these are common words
+  used in parameter type descriptions that may be confused for
+  classes of the same name. For example::
+
+      numpydoc_xref_ignore = {'type', 'optional', 'default'}
+
+  The default is an empty set.
+
+  If the ``numpydoc_xref_ignore="all"``, then all unrecognized terms are
+  ignored, i.e. terms not in ``numpydoc_xref_aliases`` are *not* wrapped in
+  ``:obj:`` roles.
+  This configuration parameter may be useful if you only want create
+  cross references for a small number of terms. In this case, including the
+  desired cross reference mappings in ``numpydoc_xref_aliases`` and setting
+  ``numpydoc_xref_ignore="all"`` is more convenient than explicitly listing
+  terms to ignore in a set.
 numpydoc_edit_link : bool
-  .. deprecated:: edit your HTML template instead
+  .. deprecated:: 0.7.0
+
+  edit your HTML template instead
 
   Whether to insert an edit link after docstrings.