Update isync git URL

```
Zameers-MacBook-Air:code zmanji$ git clone git://isync.git.sourceforge.net/gitroot/isync/isync
Cloning into 'isync'...
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Zameers-MacBook-Air:code zmanji$ git clone git://git.code.sf.net/p/isync/isync
Cloning into 'isync'...
remote: Counting objects: 3314, done.
remote: Compressing objects: 100% (938/938), done.
remote: Total 3314 (delta 2493), reused 3155 (delta 2358)
Receiving objects: 100% (3314/3314), 870.01 KiB | 277.00 KiB/s, done.
Resolving deltas: 100% (2493/2493), done.
Checking connectivity... done
```