docs: small release calendar fixes

Signed-off-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
diff --git a/docs/releasing.html b/docs/releasing.html
index 256c2df..99707be 100644
--- a/docs/releasing.html
+++ b/docs/releasing.html
@@ -576,7 +576,7 @@
 </pre>
 
 
-<h1 id="#calendar">Update the calendar</h1>
+<h1 id="calendar">Update the calendar</h1>
 
 <p>
 Remove the version from the <a href="release-calendar.html" target="_parent">calendar</a>.