Fix small markup issue

<foo> is a URL in Markdown, so this was misformatted.

diff --git a/doc/usage.md b/doc/usage.md
index 86a7c1c6f7c9e5044640ad9e3d9c154c68eb9680..e5d29defd52e157f5e47dbb571bb6e5a21a373ab 100644 (file)
--- a/doc/usage.md
+++ b/doc/usage.md
@@ -659,7 +659,7 @@ connection is next released (according to the pooling mode), and new
 server connections will immediately use the updated connection
 parameters.
 
-#### WAIT_CLOSE [<db>]
+#### WAIT_CLOSE [db]
 
 Wait until all server connections, either of the specified database or
 of all databases, have cleared the "close_needed" state (see **SHOW