docs(skills): restore agent-browser prefix in interact bash examples (#195)

interact sends --code literally to the API with no client-side
prefixing, and the server-side bash environment requires invoking
agent-browser explicitly (per maintainer review). The earlier fix
correctly removed the nonexistent --language flag but wrongly dropped
the prefix, over-generalizing from browser execute's auto-prefix
logic, which never runs for interact.

Author: chenxin-yan

skills/firecrawl-interact/SKILL.md

@@ -34,8 +34,8 @@ firecrawl interact "Extract the pricing table"
 firecrawl interact "<scrape-id>" "Extract the pricing table"
 
 # 3. Or use code for precise control
-firecrawl interact --code "click @e5" --bash
-firecrawl interact --code "snapshot -i" --bash
+firecrawl interact --code "agent-browser click @e5" --bash
+firecrawl interact --code "agent-browser snapshot -i" --bash
 
 # 4. Stop the session when done
 firecrawl interact stop