Remove ! from todo!() in comments (#8643)

This practice makes it difficult to locate todo!s in my code when I'm
working. Let's take out the bang if we want to keep doing this.

Release Notes:

- N/A

crates/theme/src/one_themes.rs

@@ -100,7 +100,7 @@ pub(crate) fn one_dark() -> Theme {
                 editor_document_highlight_write_background: gpui::red(),
 
                 terminal_background: bg,
-                // todo!("Use one colors for terminal")
+                // todo("Use one colors for terminal")
                 terminal_foreground: crate::white().dark().step_12(),
                 terminal_bright_foreground: crate::white().dark().step_11(),
                 terminal_dim_foreground: crate::white().dark().step_10(),

crates/theme/src/styles/colors.rs

@@ -130,7 +130,7 @@ pub struct ThemeColors {
     /// The border color of the scrollbar track.
     pub scrollbar_track_border: Hsla,
     // /// The opacity of the scrollbar status marks, like diagnostic states and git status.
-    // todo!()
+    // todo()
     // pub scrollbar_status_opacity: Hsla,
 
     // ===