Update changelog.txt

Author: myk002

changelog.txt

@@ -33,7 +33,7 @@ Template for new versions:
 ## New Features
 - `gui/design`: show selected dimensions next to the mouse cursor when designating with vanilla tools, for example when painting a burrow or designating digging
 - `quickfort`: new blueprint mode for designating burrows
-- `unforbid`: now ignores worn and tattered items by default (X/XX), use -x to bypass
+- `unforbid`: now ignores worn and tattered items by default (X/XX), use -X to bypass
 
 ## Fixes
 - `gui/unit-syndromes`: show the syndrome names properly in the UI