Fix typo in broadcast docs

[ci skip]

Author: carlobaldassi

base/broadcast.jl

@@ -265,7 +265,7 @@ end
 Broadcasts the arrays, tuples and/or scalars `As` to a container of the
 appropriate type and dimensions. In this context, anything that is not a
 subtype of `AbstractArray` or `Tuple` is considered a scalar. The resulting
-container is stablished by the following rules:
+container is established by the following rules:
 
  - If all the arguments are scalars, it returns a scalar.
  - If the arguments are tuples and zero or more scalars, it returns a tuple.

doc/stdlib/arrays.rst

@@ -606,7 +606,7 @@ All mathematical operations and functions are supported for arrays
 
    .. Docstring generated from Julia source
 
-   Broadcasts the arrays, tuples and/or scalars ``As`` to a container of the appropriate type and dimensions. In this context, anything that is not a subtype of ``AbstractArray`` or ``Tuple`` is considered a scalar. The resulting container is stablished by the following rules:
+   Broadcasts the arrays, tuples and/or scalars ``As`` to a container of the appropriate type and dimensions. In this context, anything that is not a subtype of ``AbstractArray`` or ``Tuple`` is considered a scalar. The resulting container is established by the following rules:
 
    * If all the arguments are scalars, it returns a scalar.
    * If the arguments are tuples and zero or more scalars, it returns a tuple.

doc/stdlib/math.rst

@@ -461,7 +461,7 @@ Mathematical Operators
 
    .. Docstring generated from Julia source
 
-   Equivalent to ``!is(x, y)``\ .
+   Equivalent to ``!(x === y)``\ .
 
 .. _<:
 .. function:: <(x, y)