docs: typo in catalog json (#70)

Author: vburckhardt

ibm_catalog.json

@@ -15,6 +15,7 @@
 				"ai"
 			],
 			"short_description": "An automated solution that deploys a sample application illustrating how to implement the RAG Pattern with watson.ai and IBM Cloud services.",
+			"offering_docs_url": "https://github.com/terraform-ibm-modules/stack-retrieval-augmented-generation/blob/main/README.md",
 			"offering_icon_url": "https://globalcatalog.cloud.ibm.com/api/v1/1082e7d2-5e2f-0a11-a3bc-f88a8e1931fc/artifacts/solution.svg",
 			"flavors": [
 				{
@@ -104,7 +105,7 @@
 					"architecture": {
 						"features": [
 							{
-								"title": "Retrieval Augmented Generation sample pattern.",
+								"title": "Retrieval Augmented Generation sample pattern",
 								"description": "Deploy a banking retrieval augmented generation (RAG) sample application to IBM Cloud Code Engine using Continous Delivery."
 							},
 							{