doc: fix way to build URL

src/detect-filemagic.c

@@ -69,7 +69,7 @@ void DetectFilemagicRegister(void)
 {
     sigmatch_table[DETECT_FILEMAGIC].name = "filemagic";
     sigmatch_table[DETECT_FILEMAGIC].desc = "match on the information libmagic returns about a file";
-    sigmatch_table[DETECT_FILEMAGIC].url = "https://suricata.readthedocs.io/en/latest/rules/file-keywords.html#filemagic";
+    sigmatch_table[DETECT_FILEMAGIC].url = DOC_URL DOC_VERSION "/rules/file-keywords.html#filemagic";
     sigmatch_table[DETECT_FILEMAGIC].Setup = DetectFilemagicSetupNoSupport;
     sigmatch_table[DETECT_FILEMAGIC].flags = SIGMATCH_QUOTES_MANDATORY|SIGMATCH_HANDLE_NEGATION;
 }

src/detect-lua.c

@@ -113,7 +113,7 @@ void DetectLuaRegister(void)
     sigmatch_table[DETECT_LUA].name = "lua";
     sigmatch_table[DETECT_LUA].alias = "luajit";
     sigmatch_table[DETECT_LUA].desc = "match via a lua script";
-    sigmatch_table[DETECT_LUA].url = "https://suricata.readthedocs.io/en/latest/rules/rule-lua-scripting.html";
+    sigmatch_table[DETECT_LUA].url = DOC_URL DOC_VERSION "/rules/rule-lua-scripting.html";
     sigmatch_table[DETECT_LUA].Match = DetectLuaMatch;
     sigmatch_table[DETECT_LUA].AppLayerTxMatch = DetectLuaAppTxMatch;
     sigmatch_table[DETECT_LUA].Setup = DetectLuaSetup;