blag: fix link in Optimizing scanned PDFs

diff --git a/blag/post/optimizing-xsane-s-scanned-pdfs.mdwn b/blag/post/optimizing-xsane-s-scanned-pdfs.mdwn
index c9db67b..e48c024 100644 (file)
--- a/blag/post/optimizing-xsane-s-scanned-pdfs.mdwn
+++ b/blag/post/optimizing-xsane-s-scanned-pdfs.mdwn
@@ -31,6 +31,7 @@ and `prepress` for color-preserving 300 dpi), but they are pre-defined, and
 for my 200 dpi images, `ebook` was not enough (I would lose resolution),
 while `printer` was too high and would only enlarge the PDF.
 
+[gs]: http://ghostscript.com "Ghostscript homepage"
 [gs-ps-pdf]: http://milan.kupcevic.net/ghostscript-ps-pdf/#refs "Ghostscript PDF Reference & Tips"