Fix is_dormant typo, add new regex

Author: sapphyrus

build/gitbook/globals/entity.md

@@ -147,7 +147,7 @@ Argument | Type | Description
 -------- | ---- | -----------
   **ent** | number (entindex) | Entity index.
 
-Returns true if the player is not dormant.
+Returns true if the player is dormant.
 
 
 #### entity.is_enemy