Add Boba to the list of networks (#120)

* Update create-subgraph-hosted.mdx

* Update what-is-hosted-service.mdx

Author: azf20

pages/en/developer/create-subgraph-hosted.mdx

@@ -43,6 +43,7 @@ The Graph Network supports subgraphs indexing mainnet Ethereum:
 - `optimism-kovan`
 - `aurora`
 - `aurora-testnet`
+- `boba`
 
 The Graph's Hosted Service relies on the stability and reliability of the underlying technologies, namely the provided JSON RPC endpoints. Newer networks will be marked as being in beta until the network has proven itself in terms of stability, reliability, and scalability. During this beta period, there is a risk of downtime and unexpected behaviour.
 

pages/en/hosted-service/what-is-hosted-service.mdx

@@ -75,3 +75,4 @@ Please note that the following networks are supported on the Hosted Service. Net
 - `optimism-kovan`
 - `aurora`
 - `aurora-testnet`
+- `boba`