Redo of PR#5345. Fixed spelling and typographical errors found by CodeSpell.

Signed-off-by: Shaun Case <warmsocks@gmail.com>
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0fccd3d..7550f45 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@
 #     command but rather at the target level using the
 #     target_include_directories command. That way, it is easier to guarantee
 #     that targets are built using the proper list of include directories.
-#   + Use the PUBLIC and PRIVATE keywords to specifiy the scope of include
+#   + Use the PUBLIC and PRIVATE keywords to specify the scope of include
 #     directories. That way, a target linking to a library (using the
 #     target_link_librairies command) inherits from the library PUBLIC include
 #     directories and not from the PRIVATE ones.