Fix typos in doc/source/developer-docs

Change-Id: I056559e0c9d38484b5315d4cad6a55ebd09cd205

doc/source/developer-docs/extending.rst

@@ -32,7 +32,7 @@ ansible.cfg files
 -----------------
 
 You can create your own playbook, variable, and role structure while still
-including the openstack-ansible roles and libaries by putting an
+including the openstack-ansible roles and libraries by putting an
 ``ansible.cfg`` file in your ``playbooks`` directory.
 
 The relevant options for Ansible 1.9 (included in openstack-ansible)
@@ -124,7 +124,7 @@ will be installed by the
 Setting overrides in configuration files
 ----------------------------------------
 
-All of the services that use YAML, JSON, or INI for configuration can recieve
+All of the services that use YAML, JSON, or INI for configuration can receive
 overrides through the use of a Ansible action plugin named ``config_template``.
 The configuration template engine allows a deployer to use a simple dictionary
 to modify or add items into configuration files at run time that may not have a

doc/source/developer-docs/quickstart-aio.rst

@@ -60,7 +60,7 @@ repository root directory:
            /opt/openstack-ansible
        $ cd /opt/openstack-ansible
 
-Next switch the the applicable branch/tag you wish to deploy from. Note that
+Next switch the applicable branch/tag you wish to deploy from. Note that
 deploying from the head of a branch may result in an unstable build due to
 changes in flight and upstream OpenStack changes. For a test (ie not a
 development) build it is usually best to checkout the latest tagged version.

doc/source/developer-docs/scripts.rst

@@ -5,7 +5,7 @@ Included Scripts
 
 The repository contains several helper scripts to manage gate jobs,
 install base requirements, and update repository information. Execute
-these scripts from the root of the respository clone. For example:
+these scripts from the root of the repository clone. For example:
 
 .. code:: bash