Use m for Terminal menu mnemonic

Fixes #53828

src/vs/code/electron-main/menus.ts

@@ -241,7 +241,7 @@ export class CodeMenu {
 
 		// Terminal
 		const terminalMenu = new Menu();
-		const terminalMenuItem = new MenuItem({ label: this.mnemonicLabel(nls.localize({ key: 'mTerminal', comment: ['&& denotes a mnemonic'] }, "&&Terminal")), submenu: terminalMenu });
+		const terminalMenuItem = new MenuItem({ label: this.mnemonicLabel(nls.localize({ key: 'mTerminal', comment: ['&& denotes a mnemonic'] }, "Ter&&minal")), submenu: terminalMenu });
 		this.setTerminalMenu(terminalMenu);
 
 		// Debug

src/vs/workbench/browser/parts/menubar/menubarPart.ts

@@ -74,7 +74,7 @@ export class MenubarPart extends Part {
 		'Selection': nls.localize({ key: 'mSelection', comment: ['&& denotes a mnemonic'] }, "&&Selection"),
 		'View': nls.localize({ key: 'mView', comment: ['&& denotes a mnemonic'] }, "&&View"),
 		'Go': nls.localize({ key: 'mGoto', comment: ['&& denotes a mnemonic'] }, "&&Go"),
-		'Terminal': nls.localize({ key: 'mTerminal', comment: ['&& denotes a mnemonic'] }, "&&Terminal"),
+		'Terminal': nls.localize({ key: 'mTerminal', comment: ['&& denotes a mnemonic'] }, "Ter&&minal"),
 		'Debug': nls.localize({ key: 'mDebug', comment: ['&& denotes a mnemonic'] }, "&&Debug"),
 		'Tasks': nls.localize({ key: 'mTasks', comment: ['&& denotes a mnemonic'] }, "&&Tasks"),
 		'Help': nls.localize({ key: 'mHelp', comment: ['&& denotes a mnemonic'] }, "&&Help")