Fix trivial grammar and spelling errors in the doc

doc/faq.rst

@@ -16,7 +16,7 @@ To expand on this a little:
 
 There is much argument over the actual definition of "open core".  From our standpoint, Salt is open source because 
 
-1. It is a standalone product that that anyone is free to use.
+1. It is a standalone product that anyone is free to use.
 2. It is developed in the open with contributions accepted from the community for the good of the project. 
 3. There are no features of Salt itself that are restricted to separate proprietary products distributed by SaltStack, Inc.
 4. Because of our Apache 2.0 license, Salt can be used as the foundation for a project or even a proprietary tool.

doc/glossary.rst

@@ -97,8 +97,8 @@ Glossary
         evaluated. *See also*: :ref:`state layers <state-layers-low-state>`.
 
     Master
-        A central Salt daemon which from which commands can be issued to
-        listening minions.
+        A central Salt daemon from which commands can be issued to listening
+        minions.
 
     Masterless
         A minion which does not require a Salt master to operate. All

doc/topics/development/tests/index.rst

@@ -45,7 +45,7 @@ sent through the started daemons.
 Integration tests are particularly good at testing modules, states, and
 shell commands, among other segments of Salt's ecosystem. By utilizing
 the integration test daemons, integration tests are easy to write. They
-are also SaltStack's gerneally preferred method of adding new tests.
+are also SaltStack's generally preferred method of adding new tests.
 
 The discussion in the :ref:`Integration vs. Unit <integration-vs-unit>`
 section of the :ref:`testing tutorial <tutorial-salt-testing>` is