[Doc] Further fixes in docs layout

doc/doxydown/doxydown.pl

@@ -380,7 +380,7 @@ sub parse_function {
     }
 
     if ( !$f->{'brief'} && $f->{'data'} ) {
-        $f->{'data'} =~ /^([^.]+)\.?.*/;
+        $f->{'data'} =~ /^(.*?)(?:(?:[.:]\s)|\n).*/;
 
         if ( $1 ) {
             $f->{'brief'} = "$1.";

src/lua/lua_task.c

@@ -52,13 +52,13 @@ end
 /***
  * @function rspamd_task.load_from_file(filename[, cfg])
  * Loads a message from specific file
- * @return {boolean},{rspamd_task|error} status + new task or error message
+ * @return {boolean,rspamd_task|error} status + new task or error message
  */
 LUA_FUNCTION_DEF (task, load_from_file);
 /***
  * @function rspamd_task.load_from_string(message[, cfg])
  * Loads a message from specific file
- * @return {boolean},{rspamd_task|error} status + new task or error message
+ * @return {boolean,rspamd_task|error} status + new task or error message
  */
 LUA_FUNCTION_DEF (task, load_from_string);