update submodule

faithandbrave · faithandbrave · commit b7067a9ccbf0 · 2020-03-25T19:55:06.000+09:00
diff --git a/markdown_to_html b/markdown_to_html
@@ -1 +1 @@
-Subproject commit a798bf5b6b201ffd4411d33377b4ade257e2be3d
+Subproject commit f528f80c1d43ba261dcb09bb4946b96b757eb4e7
