Merge branch 'contrib/14835-optional-tagline-in-logo'

contribute/how/promote/material/logo.mdwn

@@ -36,6 +36,11 @@ Flat
 [[!img tails-logo-flat.png class="margin" link="no"]]
 [[!img tails-logo-flat-inverted.png class="margin" link="no"]]
 
+### Without tagline
+
+[[!img tails-logo-flat-notagline.png class="margin" link="no"]]
+[[!img tails-logo-flat-inverted-notagline.png class="margin" link="no"]]
+
 Drawing only
 ------------