Fix project command documentation typo (#13384)

Commit 9090572f (Add ability to include a file in a project via a cache
variable, 2012-02-17) taught the project() command to check variable
"CMAKE_PROJECT_<projectName>_INCLUDE" but the documentation included an
extra "_FILE" by accident.  Remove it.

1 files changed, 1 insertions, 1 deletions

diff --git a/Source/cmProjectCommand.h b/Source/cmProjectCommand.h
index 1e5fc09..9a40081 100644
--- a/Source/cmProjectCommand.h
+++ b/Source/cmProjectCommand.h
@@ -69,7 +69,7 @@ public:
       "C++ compiler, you can disable the check for it by explicitly listing "
       "the languages you want to support, e.g. C.  By using the special "
       "language \"NONE\" all checks for any language can be disabled. "
-      "If a variable exists called CMAKE_PROJECT_<projectName>_INCLUDE_FILE, "
+      "If a variable exists called CMAKE_PROJECT_<projectName>_INCLUDE, "
       "the file pointed to by that variable will be included as the last step "
       "of the project command.";
     }