[frontend] Better autocapitalize/spellcheck settings on forms (#3077)

web/source/settings/views/moderation/reports/detail.tsx

@@ -213,14 +213,18 @@ function ReportActionForm({ report }) {
 				This is useful for providing an explanation about what action was
 				taken (if any) before the report was marked as resolved.
 				<br />
-				<b>
-					Any comment made here will be visible
-					to the user that created the report!
-				</b>
+				<div className="info">
+					<i className="fa fa-fw fa-exclamation-triangle" aria-hidden="true"></i>
+					<b>
+						If the report was created by a local account, then any
+						comment made here will be emailed to that account's user!
+					</b>
+				</div>
 			</>
 			<TextArea
 				field={form.comment}
 				label="Comment"
+				autoCapitalize="sentences"
 			/>
 			<MutationButton
 				disabled={false}