update tag_database and add semicolons to http snippets

snippets/httpGet.md

@@ -14,7 +14,7 @@ const httpGet = (url, callback, err = console.error) => {
   request.onload = () => callback(request);
   request.onerror = () => err(request);
   request.send();
-}
+};
 ```
 
 ```js

tag_database

@@ -62,6 +62,7 @@ head:array
 hexToRGB:utility,string,math,advanced
 hide:browser,css
 httpGet:utility,url
+httpPost:utility,url
 httpsRedirect:browser,url
 indexOfAll:array
 initial:array