fix(docs): correct vlagent example (#1682)

Author: syphernl

docs/resources/vlagent.md

@@ -199,7 +199,7 @@ metadata:
   name: resources-example
 spec:
   remoteWriteSettings:
-    maxDiskUsagePerURL: "1Gi"
+    maxDiskUsagePerURL: "1GiB"
 ```
 
 ## Examples