docs(instrumentation-graphql): gql supported versions (#1969)

Author: overbit

plugins/node/opentelemetry-instrumentation-graphql/README.md

@@ -21,7 +21,7 @@ npm install @opentelemetry/instrumentation-graphql
 
 ### Supported Versions
 
-`>=14 <16`
+`^14.0 | ^15.0 | ^16.0`
 
 ## Usage