fix a comment typo in md4c-html.h, md_render_html -> md_html
diff --git a/src/md4c-html.h b/src/md4c-html.h
index 3dff647..1042d29 100644
--- a/src/md4c-html.h
+++ b/src/md4c-html.h
@@ -43,7 +43,7 @@
/* Render Markdown into HTML.
*
* Note only contents of <body> tag is generated. Caller must generate
- * HTML header/footer manually before/after calling md_render_html().
+ * HTML header/footer manually before/after calling md_html().
*
* Params input and input_size specify the Markdown input.
* Callback process_output() gets called with chunks of HTML output.