update docs

Author: vvaezian

docs/admin_guide/admin_panel_overview.md

@@ -2,7 +2,7 @@
 
 ### LLM Config
 
-Here you set your OpenAI API key. Your OpenAI account needs to be at least on <a href="https://platform.openai.com/docs/guides/rate-limits/usage-tiers#usage_tiers" target="_blank">tier 1</a>, as DataBot uses some features that are not available in the free tier models. Tier 3+ is recommended for production use.
+Here you set your OpenAI API key. Your OpenAI account needs to be at least on <a href="https://platform.openai.com/docs/guides/rate-limits#usage-tiers" target="_blank">tier 1</a>, as DataBot uses some features that are not available in the free tier models. Tier 3+ is recommended for production use.
 
 Here you can also configure several features for LLM. One important feature is **web search**. When web search is enabled, user queries that cannot be answered by database data, would be answered by web search.