STYLE: Fixed line-too-long.

Source/cmStringCommand.h

@@ -85,7 +85,8 @@ public:
       "  STRING(TOLOWER <string1> <output variable>)\n"
       "  STRING(LENGTH <string> <output variable>)\n"
       "  STRING(SUBSTRING <string> <begin> <length> <output variable>)\n"
-      "  STRING(RANDOM [LENGTH <length>] [ALPHABET <alphabet>] <output variable>)\n"
+      "  STRING(RANDOM [LENGTH <length>] [ALPHABET <alphabet>]\n"
+      "         <output variable>)\n"
       "REGEX MATCH will match the regular expression once and store the "
       "match in the output variable.\n"
       "REGEX MATCHALL will match the regular expression as many times as "