Wrong README for todo-csharp-cosmos-sql (not Mongo!)

[savannahostrowski]

https://github.com/Azure-Samples/todo-csharp-cosmos-sql. We reference MongoDB but this should be SQL?

See arch diagram and also https://github.com/Azure-Samples/todo-csharp-cosmos-sql/blob/main/infra/main.bicep

[rajeshkamal5050]

@jongio @vhvb1989 do you know if this todo-csharp-cosmos-sql does provision Cosmos DB(MongoDB API) similar to todo-java-mongo and todo-nodejs-mongo?

[vhvb1989]

@rajeshkamal5050 , yes, it uses cosmos-sql-db (see: https://github.com/Azure-Samples/todo-csharp-cosmos-sql/blob/main/infra/app/db.bicep#L26)

The template name is good. The readme needs to be updated