tools/net/ynl-gen-rst: Remove bold from attribute-set headings

The generated .rst for attribute-sets currently uses a sub-sub-heading
for each attribute, with the attribute name in bold. This makes
attributes stand out more than the attribute-set sub-headings they are
part of.

Remove the bold markup from attribute sub-sub-headings.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://lore.kernel.org/r/20231215093720.18774-13-donald.hunter@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

tools/net/ynl/ynl-gen-rst.py

@@ -240,7 +240,7 @@ def parse_attr_sets(entries: List[Dict[str, Any]]) -> str:
         lines.append(rst_section(entry["name"]))
         for attr in entry["attributes"]:
             type_ = attr.get("type")
-            attr_line = bold(attr["name"])
+            attr_line = attr["name"]
             if type_:
                 # Add the attribute type in the same line
                 attr_line += f" ({inline(type_)})"