update docs

examples/CMakeLists.txt

@@ -42,7 +42,7 @@ project(examples)
 # cmake needs is the dlib source code folder and it will take care of everything.
 add_subdirectory(../dlib dlib_build)
 
-# If you have cmake 3.11 or newer you can even use FetchContent instead of
+# If you have cmake 3.14 or newer you can even use FetchContent instead of
 # add_subdirectory() to pull in dlib as a dependency.  So instead of using the
 # above add_subdirectory() command, you could use the following three commands
 # to make dlib available: