tweak settings description

src/vs/workbench/electron-browser/main.contribution.ts

@@ -159,7 +159,7 @@ let workbenchProperties: { [path: string]: IJSONSchema; } = {
 	},
 	'workbench.editor.enablePreview': {
 		'type': 'boolean',
-		'description': nls.localize('enablePreview', "Controls if opened editors show as preview. Preview editors are reused until they are kept (e.g. via double click or editing)."),
+		'description': nls.localize('enablePreview', "Controls if opened editors show as preview. Preview editors are reused until they are kept (e.g. via double click or editing) and show up with an italic font style."),
 		'default': true
 	},
 	'workbench.editor.enablePreviewFromQuickOpen': {

src/vs/workbench/parts/files/browser/files.contribution.ts

@@ -168,7 +168,7 @@ configurationRegistry.registerConfiguration({
 	'properties': {
 		'files.exclude': {
 			'type': 'object',
-			'description': nls.localize('exclude', "Configure glob patterns for excluding files and folders."),
+			'description': nls.localize('exclude', "Configure glob patterns for excluding files and folders. For example, the files explorer decides which files and folders to show or hide based on this setting."),
 			'default': { '**/.git': true, '**/.svn': true, '**/.hg': true, '**/CVS': true, '**/.DS_Store': true },
 			'scope': ConfigurationScope.RESOURCE,
 			'additionalProperties': {