Fixing broken logo image

Signed-off-by: Mary Anthony <mary.anthony@docker.com>

README.md

@@ -18,7 +18,7 @@ It benefits directly from the experience accumulated over several years
 of large-scale operation and support of hundreds of thousands of
 applications and databases.
 
-![Docker L](docs/theme/mkdocs/images/docker-logo-compressed.png "Docker")
+![Docker L](docs/sources/static_files/dockerlogo-v.png "Docker")
 
 ## Security Disclosure