Update dimension description to match the behavior (#14232) (#23264)

[upstream:cf4bd812fab68fe6a003b35d63621a7a7945071b]

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

google/services/dataplex/resource_dataplex_datascan.go

@@ -353,7 +353,7 @@ Format://bigquery.googleapis.com/projects/PROJECT_ID/datasets/DATASET_ID/tables/
 									"dimension": {
 										Type:        schema.TypeString,
 										Required:    true,
-										Description: `The dimension a rule belongs to. Results are also aggregated at the dimension level. Supported dimensions are ["COMPLETENESS", "ACCURACY", "CONSISTENCY", "VALIDITY", "UNIQUENESS", "INTEGRITY"]`,
+										Description: `The dimension name a rule belongs to. Custom dimension name is supported with all uppercase letters and maximum length of 30 characters.`,
 									},
 									"column": {
 										Type:        schema.TypeString,

website/docs/r/dataplex_datascan.html.markdown

@@ -456,7 +456,7 @@ The following arguments are supported:
 
 * `dimension` -
   (Required)
-  The dimension a rule belongs to. Results are also aggregated at the dimension level. Supported dimensions are ["COMPLETENESS", "ACCURACY", "CONSISTENCY", "VALIDITY", "UNIQUENESS", "INTEGRITY"]
+  The dimension name a rule belongs to. Custom dimension name is supported with all uppercase letters and maximum length of 30 characters.
 
 * `threshold` -
   (Optional)