fix typo in help text

README.md

@@ -45,7 +45,7 @@ Options:
 
 Commands:
   decode  Decode DDS files to images.
-  encode  Decode DDS files to images of the given format.
+  encode  Encode images to DDS files of the given format.
 ```
 
 To decode DDS files to images, use the `decode` subdommand, along with a glob or a

quicktex/cli/encode.py

@@ -12,7 +12,7 @@ from PIL import Image
 
 @click.group()
 def encode():
-    """Decode DDS files to images of the given format."""
+    """Encode images to DDS files of the given format."""
 
 
 @click.command()