Fixed a typo in the return message (#107)

Signed-off-by: Tuna Alaygut <alaygut@gmail.com>

nginx-flask-mongo/flask/server.py

@@ -14,7 +14,7 @@ def todo():
         client.admin.command('ismaster')
     except:
         return "Server not available"
-    return "Hello fom the MongoDB client!\n"
+    return "Hello from the MongoDB client!\n"
 
 
 if __name__ == "__main__":