Upgrade pulldown-cmark to 0.13.0

Author: Roms1383

Cargo.lock

@@ -48,7 +48,7 @@ notify-debouncer-mini = "0.6.0"
 opener = "0.8.2"
 pathdiff = "0.2.3"
 pretty_assertions = "1.4.1"
-pulldown-cmark = { version = "0.10.3", default-features = false, features = ["html"] } # Do not update, part of the public api.
+pulldown-cmark = { version = "0.13.0", default-features = false, features = ["html"] } # Do not update, part of the public api.
 regex = "1.11.1"
 select = "0.6.1"
 semver = "1.0.26"

Cargo.toml

@@ -200,6 +200,13 @@ fn render_item(
                 // blocks, and worse case you have some noise in the index.
                 body.push_str(&clean_html(&html));
             }
+            Event::InlineMath(text) | Event::DisplayMath(text) => {
+                if in_heading {
+                    heading.push_str(&text);
+                } else {
+                    body.push_str(&text);
+                }
+            }
             Event::Start(_) | Event::End(_) | Event::Rule | Event::SoftBreak | Event::HardBreak => {
                 // Insert spaces where HTML output would usually separate text
                 // to ensure words don't get merged together