orgcamp-madrid-2013: fix attr_html

orgcamp-madrid-2013.org

@@ -13,30 +13,30 @@ Some photos taken in the Madrid Org Camp in Aluche, Madrid, Spain. The
 days 8 and 9 of March (2013).
 
 #+CAPTION: Banner by David Arroyo, CC by-sa 3.0
-#+ATTR_HTML: width="300" style="border:2px solid black;"
+#+ATTR_HTML: :width="300" :style="border:2px solid black;"
 [[file:images/orgcamps/madrid/cartel.jpg]]
 
 #+CAPTION: Emacs hackers group in Madrid, CC by-sa 3.0
-#+ATTR_HTML: width="300" style="border:2px solid black;"
+#+ATTR_HTML: :width="300" :style="border:2px solid black;"
 [[file:images/orgcamps/madrid/grupo.jpg]]
 
 #+CAPTION: Emacs hackers group in Madrid, CC by-sa 3.0
-#+ATTR_HTML: width="300" style="border:2px solid black;"
+#+ATTR_HTML: :width="300" :style="border:2px solid black;"
 [[file:images/orgcamps/madrid/sala.jpg]]
 
 #+CAPTION: Emacs cup, CC by-sa 3.0
-#+ATTR_HTML: width="300" style="border:2px solid black;"
+#+ATTR_HTML: :width="300" :style="border:2px solid black;"
 [[file:images/orgcamps/madrid/taza.jpg]]
 
 #+CAPTION: Emacs Saturday, CC by-sa 3.0
-#+ATTR_HTML: width="300" style="border:2px solid black;"
+#+ATTR_HTML: :width="300" :style="border:2px solid black;"
 [[file:images/orgcamps/madrid/sabado.jpg]]
 
 #+CAPTION: Emacser, CC by-sa 3.0
-#+ATTR_HTML: width="300" style="border:2px solid black;"
+#+ATTR_HTML: :width="300" :style="border:2px solid black;"
 [[file:images/orgcamps/madrid/emacser.jpg]]
 
 #+CAPTION: John Mac Carthy Rules, CC by-sa 3.0
-#+ATTR_HTML: width="300" style="border:2px solid black;"
+#+ATTR_HTML: :width="300" :style="border:2px solid black;"
 [[file:images/orgcamps/madrid/jmc-rule.jpg]]