Small fixes (#362)

Author: MichaelMacaulay

website/pages/en/glossary.mdx

@@ -8,6 +8,8 @@ title: Glossary
 
 - **GraphQL**: A query language for APIs and a runtime for fulfilling those queries with your existing data. The Graph uses GraphQL to query subgraphs.
 
+- **Endpoint**: A URL that can be used to query a subgraph. The testing endpoint for Subgraph Studio is `https://api.studio.thegraph.com/query/<ID>/<SUBGRAPH_NAME>/<VERSION>` and the Graph Explorer endpoint is `https://gateway.thegraph.com/api/<API_KEY>/subgraphs/id/<SUBGRAPH_ID>`. The Graph Explorer endpoint is used to query subgraphs on The Graph's decentralized network.
+
 - **Subgraph**: A custom API built on blockchain data that can be queried using [GraphQL](https://graphql.org/). Developers can build, deploy and publish subgraphs to The Graph's decentralized network. Then, Indexers can begin indexing subgraphs to make them available to be queried by subgraph consumers.
 
 - **Hosted Service**: A temporary scaffold service for building and querying subgraphs as The Graph's decentralized network is maturing its cost of service, quality of service, and developer experience.

website/pages/en/network/explorer.mdx

@@ -87,7 +87,7 @@ The Delegators table will allow you to see the active Delegators in the communit
 - Total amount of GRT they have currently in the protocol
 - The date they last delegated at
 
-If you want to learn more about how to become a Delegator, look no further! All you have to do is to head over to the [official documentation](/network/delegating) or [The Graph Academy](https://docs.thegraph.academy/network/delegators).
+If you want to learn more about how to become a Delegator, look no further! All you have to do is to head over to the [official documentation](/network/delegating) or [The Graph Academy](https://docs.thegraph.academy/official-docs/delegator/choosing-indexers).
 
 ## Network