git: openjdk/mobile: 8232639: Change module graph images to use SVG instead of PNG format

[duke]

Changeset: f5b14bd7
Author:    Jonathan Gibbons <jjg at openjdk.org>
Date:      2019-10-21 11:35:36 +0000
URL:       https://git.openjdk.java.net/mobile/commit/f5b14bd7

8232639: Change module graph images to use SVG instead of PNG format

Reviewed-by: mchung, ihse

! make/Docs.gmk
! make/jdk/src/classes/build/tools/taglet/ModuleGraph.java