Add tooltip to help icon (#3626) (#3870)

* Add tooltip to help icon
* Add tooltip to menu icon

Signed-off-by: sabina.zaripova <sabina.zaripova@nu.edu.kz>
Co-authored-by: sayuree <52072402+sayuree@users.noreply.github.com>

CHANGELOG.md

@@ -225,6 +225,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - [VisBuilder] Rename "Histogram" to "Bar" in visualization type picker ([2401](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2401))
 - [Table Visualization] Fix an issue preventing sorting the first column ([#2828](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2828))
 - Temporary workaround for task-kill exceptions on Windows when it is passed a pid for a process that is already dead ([#2842](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2842))
+- Add clarifying tooltips to header navigation ([#3573](https://github.com/opensearch-project/OpenSearch-Dashboards/issues/3573))
 
 ### 🚞 Infrastructure
 

src/core/public/chrome/ui/header/header.tsx

@@ -173,7 +173,13 @@ export function Header({
                   aria-controls={navId}
                   ref={toggleCollapsibleNavRef}
                 >
-                  <EuiIcon type="menu" size="m" />
+                  <EuiIcon
+                    type="menu"
+                    size="m"
+                    title={i18n.translate('core.ui.primaryNav.menu', {
+                      defaultMessage: 'Menu',
+                    })}
+                  />
                 </EuiHeaderSectionItemButton>
               </EuiHeaderSectionItem>
 

src/core/public/chrome/ui/header/header_help_menu.tsx

@@ -331,6 +331,14 @@ class HeaderHelpMenuUI extends Component<Props, State> {
         onClick={this.onMenuButtonClick}
       >
         <EuiIcon type="questionInCircle" size="m" />
+        <EuiIcon
+          type="help"
+          size="m"
+          title={intl.formatMessage({
+            id: 'core.ui.chrome.headerGlobalNav.helpMenuButtonTitle',
+            defaultMessage: 'Help',
+          })}
+        />
       </EuiHeaderSectionItemButton>
     );