double backticks

Signed-off-by: Nathanael DEMACON <ndemacon@scaleway.com>

changelogs/current.yaml

@@ -4,7 +4,7 @@ behavior_changes:
 # *Changes that are expected to cause an incompatibility if applicable; deployment changes are likely required*
 - area: http
   change: |
-    Remove the hop by hop TE header from downstream request headers if it's not set to `trailers`, else keep it. This change can be
+    Remove the hop by hop TE header from downstream request headers if it's not set to ``trailers``, else keep it. This change can be
     temporarily reverted by setting ``envoy.reloadable_features.sanitize_te`` to false.
 
 minor_behavior_changes: