Restore Grammar Checker header alignment with the content card.

Remove the negative leading inset so the title lines up with the box below again.

Co-authored-by: Cursor <cursoragent@cursor.com>

gramora/Views/GrammarCheckerView.swift

@@ -7,7 +7,6 @@ struct GrammarCheckerView: View {
         ScrollView(.vertical, showsIndicators: false) {
             VStack(alignment: .leading, spacing: 0) {
                 header
-                    .padding(.leading, -12)
                     .padding(.bottom, 28)
 
                 contentCard