fix typo in nudging

Signed-off-by: Robert Cerven <[email protected]>

Author: rcerven

docs/modules/ROOT/pages/how-tos/configuring/component-nudges.adoc

@@ -119,7 +119,7 @@ Only following options are possible to customize via ConfigMap (for more details
 * automergeType
 * commitMessagePrefix
 * commitMessageSuffix
-* fileMatch,omitempty
+* fileMatch
 * ignoreTests
 * platformAutomerge