message: Make summary one sentence long
diff: @@ -239,8 +239,7 @@ class InitializableLookupTableBaseV1(InitializableLookupTableBase):
  @tf_export("lookup.StaticHashTable", v1=[])
  class StaticHashTable(InitializableLookupTableBase):
  - """A generic hash table implementation. The table is immutable once
  - initialized.
  + """A generic hash table that is immutable once initialized.
  Example usage:
  @@ -316,8 +315,7 @@ class StaticHashTable(InitializableLookupTableBase):
  @tf_export(v1=["lookup.StaticHashTable"])
  class StaticHashTableV1(StaticHashTable):
  - """A generic hash table implementation. The table is immutable once
  - initialized.
  + """A generic hash table that is immutable once initialized.
  When running in graph mode, you must evaluate the tensor returned by
  `tf.tables_initializer()` before evaluating the tensor returned by
  