Fix RA_LOG example in dev docs

diff --git a/docs/dev/README.md b/docs/dev/README.md
index 24197b3322741289176e0733d02625c0bf6cf94b..6a6ba1443d1e08261f94622d549c5f57d00ea2c2 100644 (file)
--- a/docs/dev/README.md
+++ b/docs/dev/README.md
@@ -212,7 +212,7 @@ To log all communication between the server and the client, there are two choice
 
 * you can log on the server side, by running something like
   ```
-  env RA_LOG=gen_lsp_server=trace code .
+  env RA_LOG=lsp_server=debug code .
   ```
 
 * you can log on the client side, by enabling `"rust-analyzer.trace.server":