Add brand icons, update pencil icon

Author: i80and

source/reference/icon.txt

@@ -10,24 +10,25 @@ Sphinx builders.
 This caption is automatically derived from the FontAwesome 5 class name
 if not explicitly provided.
 
-In your ``conf.py``, add ``'icon`` to the ``extensions``
+In your ``conf.py``, add ``'icon'`` to the ``extensions``
 list.
 
 .. example::
 
    .. code-block:: rst
 
-      Press the :icon:`windows` key. This has the caption ``windows icon``.
+      Press the :icon:`edit` button.
 
-      Press the :icon:`Windows logo <windows>` key. This has the caption
+      Press the :iconb:`Windows logo <windows>` key. This has the caption
       ``Windows logo``.
 
-   Press the :icon:`windows` key. This has the caption ``windows icon``.
+   Press the :icon:`edit` button.
 
-   Press the :icon:`Windows logo <windows>` key. This has the caption
+   Press the :iconb:`Windows logo <windows>` key. This has the caption
    ``Windows logo``.
 
-The following icons are supported:
+Regular Icons (``icon``)
+------------------------
 
 .. list-table::
 
@@ -52,8 +53,8 @@ The following icons are supported:
     * - ``exclamation-circle``
       - :icon:`exclamation-circle`
 
-    * - ``pencil``
-      - :icon:`pencil`
+    * - ``pencil-alt``
+      - :icon:`pencil-alt`
 
     * - ``save``
       - :icon:`save`
@@ -63,3 +64,11 @@ The following icons are supported:
 
     * - ``trash-alt``
       - :icon:`trash-alt`
+
+Brand Icons (``iconb``)
+-----------------------
+
+.. list-table::
+
+    * - ``windows``
+      - :iconb:`windows`