Solved typo in README.
@@ -484,7 +484,7 @@ Usually the developer is the same who does the fork, but it may be possible that
Follow these steps to build and install **METACALL** manually.
``` sh
-$ git clone https://github.com/metacall/core
+$ git clone https://github.com/metacall/core.git
$ cd metacall
$ mkdir build
$ cd build
