Fix typos.

Reviewers: mclow.lists, EricWF

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D43224

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@324989 91177308-0d34-0410-b5e6-96231b3b80d8

docs/DesignDocs/AvailabilityMarkup.rst

@@ -58,7 +58,7 @@ Testing
 Some parameters can be passed to lit to run the test-suite and exercising the
 availability.
 
-* The `platform` parameter controls the deployement target. For example lit can
+* The `platform` parameter controls the deployment target. For example lit can
   be invoked with `--param=platform=macosx10.8`. Default is the current host.
 * The `use_system_cxx_lib` parameter indicates to use another library than the
   just built one. Invoking lit with `--param=use_system_cxx_lib=true` will run

docs/DesignDocs/CapturingConfigInfo.rst

@@ -46,7 +46,7 @@ we do NOTHING.
 
 Otherwise we create a custom installation rule that modifies the installed __config
 header. The rule first generates a dummy "__config_site" header containing the required
-#defines. The contents of the dummy header are then prependend to the installed
+#defines. The contents of the dummy header are then prepended to the installed
 __config header. By manually prepending the files we avoid the cost of an
 extra #include and we allow the __config header to be ignorant of the extra
 configuration all together. An example "__config" header generated when