introduce complete verification (#1201)

skyvern/forge/prompts/skyvern/check-user-goal.j2

@@ -7,12 +7,19 @@ Make sure to ONLY return the JSON object in this format with no additional text
   "thoughts": str, // Think step by step. What information makes you believe whether user goal has completed or not. Use information you see on the site to explain.
   "user_goal_achieved": bool // True if the user goal has been completed, false otherwise.
 }
+```
 
 Elements on the page:
+```
 {{ elements }}
+```
 
 User Goal:
+```
 {{ navigation_goal }}
+```
 
 User Details:
+```
 {{ navigation_payload }}
+```