[mlir][sparse] Changed sparsity properties to use _ instead of -

Example: compressed-no -> compressed_no

Reviewed By: aartbik

Differential Revision: https://reviews.llvm.org/D158567

mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorCodegen.cpp

@@ -1183,7 +1183,7 @@ public:
                   ConversionPatternRewriter &rewriter) const override {
     // Query memSizes for the actually stored values.
     // FIXME: the nse value computed in this way might be wrong when there is
-    // any "compressed-hi" level.
+    // any "compressed_hi" level.
     rewriter.replaceOp(
         op, genValMemSize(rewriter, op.getLoc(), adaptor.getTensor()));
     return success();