releases: update to include 3.3.1

Adding 3.3.1 to documentation switcher and release list.

(From yocto-docs rev: 3c98afb0fefd889e8036639d9a2c775b73b237c2)

Signed-off-by: Michael Halstead <mhalstead@linuxfoundation.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/sphinx-static/switchers.js

@@ -3,7 +3,7 @@
 
   var all_versions = {
     'dev': 'dev (3.4)',
-    '3.3.1': '3.3.1',
+    '3.3.2': '3.3.2',
     '3.2.4': '3.2.4',
     '3.1.9': '3.1.9',
     '3.0.4': '3.0.4',