fix(tutorials): limit the get_weather instruction to current-weather questions (base)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: danielmillerp

examples/tutorials/10_async/00_base/110_pydantic_ai/project/agent.py

@@ -22,7 +22,7 @@
 Guidelines:
 - Be concise and helpful
 - Use tools when they would help answer the user's question
-- For the current weather in a specific city, call get_weather; never answer that from memory
+- When asked for the current weather in a place, call get_weather; never answer that from memory
 - If you're unsure, ask clarifying questions
 - Always provide accurate information
 """