Fix mistakes in example usages in raylib_parser help text (#4084)

parser/raylib_parser.c

@@ -1100,7 +1100,7 @@ static void ShowCommandLineInfo(void)
     printf("                                      NOTE: If not specified, defaults to: raylib_api.txt\n\n");
     printf("    -f, --format <type>             : Define output format for parser data.\n");
     printf("                                      Supported types: DEFAULT, JSON, XML, LUA, CODE\n\n");
-    printf("    -d, --define <DEF>              : Define functions specifiers (i.e. RLAPI for raylib.h, RMDEF for raymath.h, etc.)\n");
+    printf("    -d, --define <DEF>              : Define functions specifiers (i.e. RLAPI for raylib.h, RMAPI for raymath.h, etc.)\n");
     printf("                                      NOTE: If no specifier defined, defaults to: RLAPI\n\n");
     printf("    -t, --truncate <after>          : Define string to truncate input after (i.e. \"RLGL IMPLEMENTATION\" for rlgl.h)\n");
     printf("                                      NOTE: If not specified, the full input file is parsed.\n\n");
@@ -1110,7 +1110,7 @@ static void ShowCommandLineInfo(void)
     printf("        Process <raylib.h> to generate <api.json>\n\n");
     printf("    > raylib_parser --output raylib_data.info --format XML\n");
     printf("        Process <raylib.h> to generate <raylib_data.info> as XML text data\n\n");
-    printf("    > raylib_parser --input raymath.h --output raymath_data.info --format XML\n");
+    printf("    > raylib_parser --input raymath.h --output raymath_data.info --format XML --define RMAPI\n");
     printf("        Process <raymath.h> to generate <raymath_data.info> as XML text data\n\n");
 }