PGI: Fix typo in logic for C standard flags

Modules/Compiler/PGI-C.cmake

@@ -8,7 +8,7 @@ if (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 12.10)
   set(CMAKE_C90_EXTENSION_COMPILE_OPTION -c89)
   set(CMAKE_C99_STANDARD_COMPILE_OPTION -c99)
   set(CMAKE_C99_EXTENSION_COMPILE_OPTION -c99)
-  if (CMAKE_C_COMPILER_VERSION VERSION_CREATER_EQUAL 15.3)
+  if (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 15.3)
     set(CMAKE_C11_STANDARD_COMPILE_OPTION -c11)
     set(CMAKE_C11_EXTENSION_COMPILE_OPTION -c11)
   endif ()