Fix incorrect module path (#69)

Module path should match github url.

Incorrect name produces an error
```
$ go get github.com/ktrysmt/go-bitbucket@master
go: finding github.com/ktrysmt/go-bitbucket master
go: github.com/ktrysmt/[email protected]: parsing go.mod: unexpected module path "github.com/wzjgo1/go-bitbucket"
go: error loading module requirements
```

Author: smacker

go.mod

@@ -1,4 +1,4 @@
-module github.com/wzjgo1/go-bitbucket
+module github.com/ktrysmt/go-bitbucket
 
 go 1.12