Fix CSS (leshan adopters) again and again ...

Signed-off-by: Simon Bernard <sbernard@sierrawireless.com>

Signed-off-by: Simon Bernard <sbernard@sierrawireless.com>
diff --git a/css/leshan.css b/css/leshan.css
index 0d281b1..db13819 100644
--- a/css/leshan.css
+++ b/css/leshan.css
@@ -409,7 +409,8 @@
 }
 .highlight.who img {
     width: 60%;
-    max-width: 250px;
+    max-width: 300px;
+    max-height: 120px;
 }
 
 .highlight.who a::after {