Azure OpenAI link to fix + specify supported Region

[ezYakaEagle442]

at https://github.com/appdevgbb/reddog-code-spring/tree/main/generative-ai/README.md the Link to Azure OpenAI returns 404, the correct link is : https://learn.microsoft.com/en-us/azure/cognitive-services/openai/

Also I suggest to add a link to the Regions supported as it is very limited for now, in EMEA I think only WestEurope (hero Region) is supported

More eaxactly the Region support list is mentioned in this table :

• East US
• South Central US
• West Europe

@thegovind