[mlir][linalg][NFC] fix typo in split tiling (#123202)

Author: javedabsar1

mlir/lib/Dialect/Linalg/Transforms/Split.cpp

@@ -40,7 +40,7 @@ createSplitPart(RewriterBase &b, Location loc, TilingInterface op,
   sizesCopy[dimension] = size;
   offsetsCopy[dimension] = offset;
 
-  // Create the part as it it were a single tile.
+  // Create the part as if it were a single tile.
   FailureOr<TilingResult> tilingResult =
       op.getTiledImplementation(b, offsetsCopy, sizesCopy);