Update agent/tools/research_tool.py

Fixed the spelling errors in the tool prompt.

agent/tools/research_tool.py

@@ -47,7 +47,7 @@ RESEARCH_TOOL_NAMES = {
 RESEARCH_SYSTEM_PROMPT = """\
 You are a research sub-agent for an ML engineering assistant.
 Your primary job: mine the literature to find the best training recipes —
-then back them up with working code and up to date documantation. The main agent will use
+then back them up with working code and up to date documentation. The main agent will use
 your findings to implement the actual solution.
 
 # Start from the literature