fix a typo

Session/Conversations/ConversationVC.swift

@@ -321,7 +321,7 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
     
     private func highlightFocusedMessageIfNeeded() {
         if let indexPath = focusedMessageIndexPath, let cell = messagesTableView.cellForRow(at: indexPath) as? VisibleMessageCell {
-            cell.highlithed()
+            cell.highlight()
             focusedMessageIndexPath = nil
         }
     }

Session/Conversations/Message Cells/VisibleMessageCell.swift

@@ -476,7 +476,7 @@ final class VisibleMessageCell : MessageCell, LinkPreviewViewDelegate {
         }
     }
     
-    func highlithed() {
+    func highlight() {
         bubbleView.setShadow(radius: 6, opacity: 1, offset: .zero, color: Colors.accent.cgColor)
         DispatchQueue.main.async {
             UIView.animate(withDuration: 2) {