Fix markdown monospace in headings

src/markdown/highlighter.rs

@@ -1,6 +1,9 @@
 use egui::text::{CCursorRange, LayoutJob};
 
-use crate::markdown::Heading;
+use crate::{
+    markdown::Heading,
+    text_styles::{H1, H1_MONO, H2, H2_MONO, H3, H3_MONO, H4, H4_MONO, H5, H5_MONO, H6, H6_MONO},
+};
 
 use super::{Item, Style, parse};
 
@@ -36,7 +39,6 @@ pub fn highlight_markdown(
     _cursor: Option<CCursorRange>,
 ) -> LayoutJob {
     let mut job = LayoutJob::default();
-
     let code_style = Style {
         code: true,
         ..Default::default()
@@ -74,14 +76,23 @@ fn format_from_style(egui_style: &egui::Style, style: &Style) -> egui::text::Tex
     };
 
     let text_style = if let Some(heading) = style.heading {
-        match heading {
-            Heading::H1 => TextStyle::Name("H1".into()),
-            Heading::H2 => TextStyle::Name("H2".into()),
-            Heading::H3 => TextStyle::Name("H3".into()),
-            Heading::H4 => TextStyle::Name("H4".into()),
-            Heading::H5 => TextStyle::Name("H5".into()),
-            Heading::H6 => TextStyle::Name("H6".into()),
-        }
+        let text_style = match (heading, style.code) {
+            (Heading::H1, false) => H1,
+            (Heading::H2, false) => H2,
+            (Heading::H3, false) => H3,
+            (Heading::H4, false) => H4,
+            (Heading::H5, false) => H5,
+            (Heading::H6, false) => H6,
+
+            (Heading::H1, true) => H1_MONO,
+            (Heading::H2, true) => H2_MONO,
+            (Heading::H3, true) => H3_MONO,
+            (Heading::H4, true) => H4_MONO,
+            (Heading::H5, true) => H5_MONO,
+            (Heading::H6, true) => H6_MONO,
+        };
+
+        TextStyle::Name(text_style.into())
     } else if style.code {
         TextStyle::Monospace
     } else if style.small | style.raised {