Update example-agent-knowledge-mcp.md

Author: wisedev-pstach

src/assets/docs/examples/example-agent-knowledge-mcp.md

@@ -117,7 +117,7 @@ This gives the Octocode MCP server access to GitHub CLI for repository operation
     Name = "ExaDeepSearch",
     Arguments = ["-y", "exa-mcp-server"],
     Command = "npx",
-    EnvironmentVariables = {{"EXA_API_KEY","ef8d90d8-90c2-4985-a1e0-db28fa55feb5"}},
+    EnvironmentVariables = {{"EXA_API_KEY","<raw_key>"}},
     Backend = BackendType.Gemini,
     Model = "gemini-2.0-flash"
 }, ["search", "browser", "web access", "research"])