fix(docs): Update TUTORIAL.md (spelling mistake) (#637)
fix(docs): Update TUTORIAL.md (spelling mistake) (#637)

"re-implimenting" => "re-implementing"
calebmer/postgraphql,postgraphql/postgraphql,postgraphql/postgraphql,calebmer/postgraphql,calebmer/postgraphql,postgraphql/postgraphql,calebmer/postgraphql,postgraphql/postgraphql