set height on image in preview to prevent page reflow [skip ci]

Author: mojavelinux

preview-src/index.adoc

@@ -7,7 +7,7 @@ Author Name
 :page-pagination:
 :page-component-order: *, abc
 
-image:multirepo-ssg.svg[Multirepo SSG,200,float=right]
+image:multirepo-ssg.svg[Multirepo SSG,200,150,float=right]
 Platonem complectitur mediocritatem ea eos.
 Ei nonumy deseruisse ius.
 Mel id omnes verear.