fix typos in CHANGELOG
fix typos in CHANGELOG

graetzer/arangodb,arangodb/arangodb,arangodb/arangodb,Simran-B/arangodb,graetzer/arangodb,graetzer/arangodb,graetzer/arangodb,wiltonlazary/arangodb,Simran-B/arangodb,wiltonlazary/arangodb,graetzer/arangodb,graetzer/arangodb,arangodb/arangodb,arangodb/arangodb,arangodb/arangodb,arangodb/arangodb,Simran-B/arangodb,wiltonlazary/arangodb,Simran-B/arangodb,graetzer/arangodb,Simran-B/arangodb,Simran-B/arangodb,Simran-B/arangodb,graetzer/arangodb,wiltonlazary/arangodb,graetzer/arangodb,wiltonlazary/arangodb,graetzer/arangodb,wiltonlazary/arangodb,Simran-B/arangodb,arangodb/arangodb,graetzer/arangodb,Simran-B/arangodb,wiltonlazary/arangodb,graetzer/arangodb,graetzer/arangodb,Simran-B/arangodb,arangodb/arangodb,wiltonlazary/arangodb,graetzer/arangodb