Doc: fix bug

Task-number: QTCREATORBUG-6311
Change-Id: I99089d0ec7eb95a007fa21ab41d76da280472975
Reviewed-by: Tim Jenssen <tim.jenssen@nokia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@nokia.com>

doc/src/projects/creator-projects-cmake.qdoc

@@ -50,8 +50,7 @@
     \image qtcreator-cmakeexecutable.png
 
     \note Before you open a \c CMake project, you must modify the \c{PATH}
-    environment variable to include the bin folders of \c mingw and \QC in
-    the \QSDK.
+    environment variable to include the bin folders of \c mingw and Qt.
 
     For instance, if the \QSDK is installed in \c {C:\SDK}, you would use the
     following command to set the environment variables in the command line