Correct button label on basics_page.rs (Jetbrains to JetBrains) (#39240)

Correct typo, Jetbrains to JetBrains

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Closes #ISSUE

Release Notes:

- N/A *or* Added/Fixed/Improved ...

crates/onboarding/src/basics_page.rs

@@ -333,7 +333,7 @@ fn render_base_keymap_section(tab_index: &mut isize, cx: &mut App) -> impl IntoE
                 ToggleButtonWithIcon::new("VS Code", IconName::EditorVsCode, |_, _, cx| {
                     write_keymap_base(BaseKeymap::VSCode, cx);
                 }),
-                ToggleButtonWithIcon::new("Jetbrains", IconName::EditorJetBrains, |_, _, cx| {
+                ToggleButtonWithIcon::new("JetBrains", IconName::EditorJetBrains, |_, _, cx| {
                     write_keymap_base(BaseKeymap::JetBrains, cx);
                 }),
                 ToggleButtonWithIcon::new("Sublime Text", IconName::EditorSublime, |_, _, cx| {