Update search-region-support.md

doing a quick change. Instead of some tiers in East US, I'm replacing it for all tiers

Author: angiesi

articles/search/search-region-support.md

@@ -55,8 +55,7 @@ You can create an Azure AI Search service in any of the following Azure public r
 | West US 3​ | ✅ | ✅ | ✅ | ✅ | ✅ |
 | West Central US​ ​ | ✅ |  | ✅ | ✅ |  |
 
-<sup>1</sup> This region has capacity constraints on the following tiers: S2, S3, L1, and L2.
-
+<sup>1</sup> This region has capacity constraints in all tiers.
 ### Europe
 
 | Region | AI enrichment | Availability zones | Agentic retrieval | Semantic ranker | Query rewrite |