Fix Typo in "README.md".
Fix Typo in "README.md".

oldmantaiter/aerospike-client-go,matematik7/aerospike-client-go,atomx/aerospike-client-go,aerospike/aerospike-client-go,archsaber/aerospike-client-go,atomx/aerospike-client-go,matematik7/aerospike-client-go,aerospike/aerospike-client-go,oldmantaiter/aerospike-client-go,archsaber/aerospike-client-go