Updates a minor typo in vector dialect documentation.
Reviewed By: aartbik
Differential Revision: https://reviews.llvm.org/D101203
Higher-dimensional `vector`s are ubiquitous in modern HPC hardware. One way to
think about Generic Retargetable `vector`-Level Dialect is that it operates on
-`vector` types that are a multiples of a "good" `vector` size so the HW can
+`vector` types that are multiples of a "good" `vector` size so the HW can
efficiently implement a set of high-level primitives
(e.g. `vector<8x8x8x16xf32>` when HW `vector` size is say `vector<4x8xf32>`).