Remove misplaced parenthesis from configuring docs

This commit removes a misplaced parenthesis from the systemd section of
the configuring docs.

docs/reference/setup/sysconfig/configuring.asciidoc

@@ -93,7 +93,7 @@ The systemd service file (`/usr/lib/systemd/system/elasticsearch.service`)
 contains the limits that are applied by default.
 
 To override these, add a file called
-`/etc/systemd/system/elasticsearch.service.d/elasticsearch.conf`) and specify
+`/etc/systemd/system/elasticsearch.service.d/elasticsearch.conf` and specify
 any changes in that file, such as:
 
 [source,sh]