Specified when PIPE_ONCE was added.

Also, now shows when "Getting values from files" was added, a sphinx
directive was missing a colon.

docsite/rst/playbooks2.rst

@@ -567,7 +567,7 @@ Negative numbers are not supported.  This works as follows::
 Getting values from files
 `````````````````````````
 
-.. versionadded: 0.8
+.. versionadded:: 0.8
 
 Sometimes you'll want to include the content of a file directly into a playbook.  You can do so using a macro.
 This syntax will remain in future versions, though we will also will provide ways to do this via lookup plugins (see "More Loops") as well.  What follows
@@ -587,6 +587,8 @@ Because Ansible uses lazy evaluation, a "$PIPE" macro will be executed each time
 example, it will be executed separately for each host, and if it is used in a variable definition,
 it will be executed each time the variable is evaluated.
 
+.. versionadded:: 1.1
+
 The "$PIPE_ONCE" macro is an alternative that uses a caching strategy: it is executed only once, and
 subsequent accesses use the cached value. One use case is for computing a timestamp that is intended
 to be the same across all tasks and hosts that use it::