message: Remove redundant "and"
diff: @@ -966,7 +966,7 @@ DotGeneral performs the sum of products over contracting dimensions specified
  in 'dimension_numbers'.
  Associated contracting dimension numbers from the 'lhs' and 'rhs' do not need
  -to be the same and but must have the same dimension sizes.
  +to be the same but must have the same dimension sizes.
  Example with contracting dimension numbers:
  