Help: Fix capitalization in CMP0097 documentation

Help/policy/CMP0097.rst

@@ -14,7 +14,7 @@ to expect the new behavior.
 
 The ``OLD`` behavior for this policy is for ``GIT_SUBMODULES`` when set to
 an empty string to initialize and update all git submodules.
-The ``New`` behavior for this policy is for ``GIT_SUBMODULES`` when set to
+The ``NEW`` behavior for this policy is for ``GIT_SUBMODULES`` when set to
 an empty string to initialize and update no git submodules.
 
 This policy was introduced in CMake version 3.16.  Use the