updated variables for v2.2.0 release
diff --git a/docs/conf.py b/docs/conf.py
index 81ff26e..930d4ec 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -63,7 +63,7 @@
 # The short X.Y version.
 version = '2.2'
 # The full version, including alpha/beta/rc tags.
-release = '2.2.dev0'
+release = '2.2.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/docs/release.rst b/docs/release.rst
index 30d159a..39fccd2 100644
--- a/docs/release.rst
+++ b/docs/release.rst
@@ -2,7 +2,7 @@
 
 - Update the version number and push to pypi
     - Update ``pybind11/_version.py`` (set release version, remove 'dev').
-    - Update ``PYBIND11_VERSION_MAJOR`` etc. in ``include/pybind11/common.h``.
+    - Update ``PYBIND11_VERSION_MAJOR`` etc. in ``include/pybind11/detail/common.h``.
     - Ensure that all the information in ``setup.py`` is up-to-date.
     - Update version in ``docs/conf.py``.
     - Tag release date in ``docs/changelog.rst``.