Update UIImage.swift

Sources/SnapshotTesting/Snapshotting/UIImage.swift

@@ -140,7 +140,7 @@
     } else {
       let byteCountThreshold = Int((1 - precision) * Float(byteCount))
       var differentByteCount = 0
-      // NB: We are purposely using a verbose 'while' look instead of a 'for in' loop.  When the
+      // NB: We are purposely using a verbose 'while' loop instead of a 'for in' loop.  When the
       //     compiler doesn't have optimizations enabled, like in test targets, a `while` loop is
       //     significantly faster than a `for` loop for iterating through the elements of a memory
       //     buffer. Details can be found in [SR-6983](https://github.com/apple/swift/issues/49531)