fix: typo

Author: flovilmart

doc/usage/chat-buffer/tools.md

@@ -319,17 +319,17 @@ Error: {"object":"error","message":"Unexpected role 'user' after role 'tool'","t
 code":"3230"}
 ```
 
-Use the following configuration: 
+Use the following configuration:
 
 ```lua
 {
   strategies = {
     chat = {
-      adapter = "mistral", 
+      adapter = "mistral",
       tools = {
         opts = {
-          -- this is needed for mistral to work peroperly
-          auto_submit_errors = true, -- Send any errors to the LLM 
+          -- this is needed for mistral to work properly
+          auto_submit_errors = true, -- Send any errors to the LLM
         },
       }
     },