Try inline literal hack to avoid italic font on callouts

_ext/callouts.py

@@ -47,7 +47,7 @@ class LiteralIncludeVisitor(nodes.NodeVisitor):
             source = str(node.rawsource)
             for i in range(1, 20):
                 source = source.replace(
-                    f"<{i}>", chr(int(f"0x{BASE_NUM + i}", base=16))
+                    f"<{i}>", "``" + chr(int(f"0x{BASE_NUM + i}", base=16)) + "``"
                 )
             node.rawsource = source
             node[:] = [nodes.Text(source)]

intro/contribution/rst-cheat-sheet.rst

@@ -29,14 +29,15 @@ more) the lenth of the heading text, for example:
     .. code-block:: ReStructuredText
 
         incorrect H1
-        ##### # <1>
+        ##### <1>
 
         correct H1
-        ############ # <2>
+        ############ <2>
     
     .. annotations::
 
-        * <1> length of heading sybol ``#`` is smaller than the content above.
-        * <2> Shows the correct way of setting the document title (H1) with ``#``.
+        <1> Length of heading sybol ``#`` is smaller than the content above.
+
+        <2> Shows the correct way of setting the document title (H1) with ``#``.