This commit removes the `_AL_` usage in detect keywords for improved
readability.
Some of the HTTP rule keywords already had counterparts without using
"_AL_". These rule keywords are the legacy content modifier keywords
that now have sticky buffer equivalents.
For these, "_AL_" was removed and a suffix was added to the #define:
src/detect-engine-register.h:151: DETECT_HTTP_COOKIE_CM
src/detect-engine-register.h:153: DETECT_HTTP_METHOD_CM
src/detect-engine-register.h:161: DETECT_HTTP_HEADER_CM
src/detect-engine-register.h:173: DETECT_HTTP_RAW_HEADER_CM
src/detect-engine-register.h:175: DETECT_HTTP_URI_CM
src/detect-engine-register.h:179: DETECT_HTTP_STAT_MSG_CM
src/detect-engine-register.h:181: DETECT_HTTP_STAT_CODE_CM
src/detect-engine-register.h:185: DETECT_HTTP_HOST_CM