docs(installation): Update sam --version command (aws#634)

AlJohri · jfuss · commit 5bebced55a70 · 2018-08-28T06:11:35.000-07:00
diff --git a/docs/installation.rst b/docs/installation.rst
@@ -174,7 +174,7 @@ Install with PyEnv
     $ pip install --user aws-sam-cli
 
     # Verify your installation worked
-    $ sam –version
+    $ sam –-version
 
 Troubleshooting
 ---------------
