message: eager: Update broken links in guide.md
diff: @@ -68,9 +68,9 @@ enabled.
  A significant fraction of the [TensorFlow
  API](https://www.tensorflow.org/api_docs/python/) consists of numerical
  operations:
  -[arithmetic operations](https://www.tensorflow.org/api_docs/python/tf/matmul),
  -[matrix operations](https://www.tensorflow.org/api_docs/python/tf/matmul),
  -[linear algebra operations](https://www.tensorflow.org/api_docs/python/tf/linalg),
  +[arithmetic operations](https://www.tensorflow.org/api_guides/python/math_ops#Arithmetic_Operators),
  +[matrix operations](https://www.tensorflow.org/api_guides/python/math_ops#Matrix_Math_Functions),
  +[linear algebra operations](https://www.tensorflow.org/versions/master/api_docs/python/tf/linalg),
  etc.
  With eager execution enabled, these operations consume and return
  @@ -746,7 +746,7 @@ during graph construction.
  `tf.summary` operations are *not* compatible with eager execution, but an
  equivalent alternative exists in
  -[`tf.contrib.summary`](https://www.tensorflow.org/versions/master/api_guides/python/tf/contrib/summary/)
  +[`tf.contrib.summary`](https://www.tensorflow.org/versions/master/api_docs/python/tf/contrib/summary)
  that is compatible with both eager execution and graph construction.
  During model construction simply insert summary operations like
  @@ -887,7 +887,7 @@ Some differences worth noting:
  Please give eager execution a spin. This feature is in early stages and is
  evolving, so we welcome your feedback via issues on GitHub (see [known
  -issues](https://github.com/tensorflow/tensorflow/labels/eager)).
  +issues](https://github.com/tensorflow/tensorflow/labels/comp:eager)).
  You may want to browse through some sample code, including benchmarks for some:
  