replace tools videos with latest reto studio videos. am: b69830f76c am: 685953ae53 am: 55272f0f5e
am: 8a68194477

* commit '8a68194477cf938c55bbf7e36509c689d6a54b32':
  replace tools videos with latest reto studio videos.

Change-Id: I2a214e9610e7d6150c933ede111c1ce80ec21fe2