Doc fix

doc/building.dox

@@ -182,7 +182,7 @@ You will need [Native Client SDK](https://developers.google.com/native-client/be
 Tested version is `pepper_22`.
 
 Make sure you have `toolchains` Git submodule updated, as
-@ref building-download "explained above". Don't forget to adapt `NACL_PREFIX
+@ref building-download "explained above". Don't forget to adapt `NACL_PREFIX`
 variable in `generic/NaCl-glibc-x86-32.cmake` and `generic/NaCl-glibc-x86-64.cmake`
 to path where your SDK is installed. Default is `/usr/nacl`.  You may need to
 adapt also `NACL_TOOLCHAIN_PATH` so CMake is able to find the compiler.

doc/coding-style.dox

@@ -35,7 +35,7 @@ removing redundant prefixes) is encouraged.
 
 @subsubsection cpp-forward-declarations Forward declarations and forward declaration headers
 
-When an namespace has classes which are commonly forward-declared, consider
+When a namespace has classes which are commonly forward-declared, consider
 making a forward declaration header - it should have the same name as the
 namespace itself and contain foward declarations for all classes, enums and
 copies of all meaningful typedefs. See @ref compilation-forward-declarations