Improve ContextInfo formatting

Couchbase.Core.Exceptions.ParsingFailureException: Exception of type 'Couchbase.Core.Exceptions.ParsingFailureException' was thrown.

   at Couchbase.Query.QueryResultExtensions.ThrowExceptionOnError[T](IQueryResult`1 result, QueryErrorContext context) in /Users/ingenthr/src/couchbase-net-client/src/Couchbase/Query/QueryResultExtensions.cs:line 56

   at Couchbase.Query.QueryClient.ExecuteQuery[T](QueryOptions options, ITypeSerializer serializer) in /Users/ingenthr/src/couchbase-net-client/src/Couchbase/Query/QueryClient.cs:line 188

   at Couchbase.Query.QueryClient.QueryAsync[T](String statement, QueryOptions options) in /Users/ingenthr/src/couchbase-net-client/src/Couchbase/Query/QueryClient.cs:line 67

   at Couchbase.Cluster.<>c__DisplayClass27_0`1.<<QueryAsync>g__Func|0>d.MoveNext() in /Users/ingenthr/src/couchbase-net-client/src/Couchbase/Cluster.cs:line 271

--- End of stack trace from previous location where exception was thrown ---

   at Couchbase.Core.Retry.RetryOrchestrator.RetryAsync[T](Func`1 send, IRequest request) in /Users/ingenthr/src/couchbase-net-client/src/Couchbase/Core/Retry/RetryOrchestrator.cs:line 51

   at Couchbase.Cluster.QueryAsync[T](String statement, QueryOptions options) in /Users/ingenthr/src/couchbase-net-client/src/Couchbase/Cluster.cs:line 274

   at couchbase_net_testproj.Program.RunTest() in /Users/ingenthr/src/couchbase-net-testproj/Program.cs:line 64

-----------------------Context Info---------------------------

{"Statement":"[{\"statement\":\"SELECT 1=\",\"timeout\":\"75000ms\",\"$type\":\"airline\",\"client_context_id\":\"440c381b-aa94-4c5d-92b4-6581d80e53a7\"}]","ClientContextId":"440c381b-aa94-4c5d-92b4-6581d80e53a7","Parameters":"{\"Named\":{\"type\":\"airline\"},\"Raw\":{},\"Positional\":[]}","HttpStatus":400,"QueryStatus":6,"Errors":[{"msg":"syntax error - at end of input","Code":3000,"Name":null,"Severity":0,"Temp":false}],"Message":null}