format fix

diff --git a/docs/hooks.txt b/docs/hooks.txt
index e0f235d..57e6a85 100644 (file)
--- a/docs/hooks.txt
+++ b/docs/hooks.txt
@@ -739,7 +739,7 @@ $lang: laguage code (string)
 
 'LinkerMakeExternalImage': At the end of Linker::makeExternalImage() just before the return
 &$url: the image url
-&alt: the image's alt text
+&$alt: the image's alt text
 &$img: the new image HTML (if returning false)
 
 'LinkerMakeExternalLink': At the end of Linker::makeExternalLink() just before the return