Close the backticks in gpui geometry examples (#10579)

Kyle Kelley created

I noticed some of the examples in `crates/gpui/src/geometry.rs` were
missing ending triple backticks.

Release Notes:

- N/A

Change summary

crates/gpui/src/geometry.rs | 2 ++
1 file changed, 2 insertions(+)

Detailed changes

crates/gpui/src/geometry.rs 🔗

@@ -1257,6 +1257,7 @@ where
     ///     origin: Point { x: 15.0, y: 15.0 },
     ///     size: Size { width: 15.0, height: 30.0 },
     /// });
+    /// ```
     pub fn map<U>(&self, f: impl Fn(T) -> U) -> Bounds<U>
     where
         U: Clone + Default + Debug,
@@ -1283,6 +1284,7 @@ where
     ///     origin: Point { x: 15.0, y: 15.0 },
     ///     size: Size { width: 10.0, height: 20.0 },
     /// });
+    /// ```
     pub fn map_origin(self, f: impl Fn(Point<T>) -> Point<T>) -> Bounds<T> {
         Bounds {
             origin: f(self.origin),