Fix a couple nits

Author: mpenick

README.md

@@ -6,7 +6,7 @@ These APIs can be used as a standalone server using either Docker or manually
 running a server. They can also be embedded in existing applications using HTTP
 routes. 
 
-Currently, this project provides a GraphQL API. Other API types are possible in
+Currently, this project provides GraphQL APIs. Other API types are possible in
 the future.
 
 ## Getting Started

docs/graphql/README.md

@@ -538,7 +538,7 @@ enum SerialConsistency {
 
 #### Time-to-live (TTL)
 
-Time to live (TTL), defined in seconds, controls the amount of time a value
+Time-to-live (TTL), defined in seconds, controls the amount of time a value
 lives in the database before expiring e.g. `ttl: 60` means the associated values
 are no longer readable after 60 seconds. More information about TTL can be found
 in [Expiring data with time-to-live].