[MLIR][LangRef doc] Fix a small typo.

[mehdi_amini]

Thanks!

[mehdi_amini]

mlir/docs/LangRef.md

1175

Actually in terms of logical dimension, if the inner is i and outer it j, then this is correctly the outer and we should change the outer into inner 2 lines above.

[ergawy]

Fix the docs according to review.

[mehdi_amini]

LG, thanks!

mlir/docs/LangRef.md

 semi-affine maps. For example, `memref<42x16xf32, offset: 33, strides: [1, 64]>`
 specifies a non-contiguous memory region of `42` by `16` `f32` elements such
 that:
 
 1.  the minimal size of the enclosing memory region must be `33 + 42 * 1 + 16 *
     64 = 1066` elements;
 2.  the address calculation for accessing element `(i, j)` computes `33 + i +
     64 * j`
-3.  the distance between two consecutive elements along the outer dimension is
+3.  the distance between two consecutive elements along the inner dimension is
     `1` element and the distance between two consecutive elements along the
     outer dimension is `64` elements.
 
 This corresponds to a column major view of the memory region and is internally
 represented as the type `memref<42x16xf32, (i, j) -> (33 + i + 64 * j)>`.
 
 The specification of strides must not alias: given an n-D strided memref,
 indices `(i1, ..., in)` and `(j1, ..., jn)` may not refer to the same memory
 address unless `i1 == j1, ..., in == jn`.