docs: fix typo in provisioning docs (#58110)

Fix typo

Co-authored-by: Udlei Nati <udlei@nati.biz>

conf/provisioning/alerting/sample.yaml

@@ -133,7 +133,7 @@ apiVersion: 1
 #     # <duration> How long to wait before sending a notification about new alerts that
 #     #            are added to a group of alerts for which an initial notification has
 #     #            already been sent. (Usually ~5m or more), default = 5m
-#     group_internval: 5m
+#     group_interval: 5m
 #     # <duration>  How long to wait before sending a notification again if it has already
 #     #             been sent successfully for an alert. (Usually ~3h or more), default = 4h
 #     repeat_interval: 4h

docs/sources/alerting/set-up/provision-alerting-resources/file-provisioning/index.md

@@ -536,7 +536,7 @@ policies:
     # <duration> How long to wait before sending a notification about new alerts that
     #            are added to a group of alerts for which an initial notification has
     #            already been sent. (Usually ~5m or more), default = 5m
-    group_internval: 5m
+    group_interval: 5m
     # <duration>  How long to wait before sending a notification again if it has already
     #             been sent successfully for an alert. (Usually ~3h or more), default = 4h
     repeat_interval: 4h