update readme to point to hcd 2.0 instead of 1.0 (#103)

Author: skedwards88

GUIDE>MD

@@ -1,7 +1,7 @@
 API Limitation
 
 
-https://docs.datastax.com/en/hyper-converged-database/1.2/api-reference/dataapi-limits.html
+https://docs.datastax.com/en/hyper-converged-database/2.0/api-reference/dataapi-limits.html
 
 Availability
 
@@ -19,4 +19,4 @@ Searches:
 
 Counting:
 => cannot count result of a filter above 1000
-=> abive 1000 the count will be an estimate
+=> abive 1000 the count will be an estimate

README.MD

@@ -334,8 +334,9 @@ If you encounter any issues or have questions:
 - [API Reference](https://docs.datastax.com/en/astra-db-serverless/api-reference/dataapiclient.html)
 
 **Hyper-Converged Database (HCD)**
-- [Quickstart: Collections](https://docs.datastax.com/en/hyper-converged-database/1.2/api-reference/quickstart.html)
-- [Quickstart: Tables](https://docs.datastax.com/en/hyper-converged-database/1.2/api-reference/quickstart-tables.html)
+- [Quickstart: Collections](https://docs.datastax.com/en/hyper-converged-database/2.0/api-reference/quickstart.html)
+- [Quickstart: Tables](https://docs.datastax.com/en/hyper-converged-database/2.0/api-reference/quickstart-tables.html)
+- [API Reference](https://docs.datastax.com/en/hyper-converged-database/2.0/api-reference/dataapiclient.html)
 
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