TEZ-4332: Change ASF logo on Tez webpage according to recent guidelines

[abstractdog]

No description provided.

[jteagles]

+1. Seems good to me.

[tez-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 4s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+1 💚	@author	0m 0s	The patch does not contain any @author tags.
		_ master Compile Tests _
+1 💚	mvninstall	13m 10s	master passed
+1 💚	mvnsite	0m 18s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	0m 8s	the patch passed
+1 💚	mvnsite	0m 7s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	xml	0m 1s	The patch has no ill-formed XML file.
		_ Other Tests _
+1 💚	asflicense	0m 19s	The patch does not generate ASF License warnings.
		15m 41s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-148/1/artifact/out/Dockerfile
GITHUB PR	#148
JIRA Issue	TEZ-4332
Optional Tests	dupname asflicense mvnsite xml
uname	Linux 4b7cd67c0132 4.15.0-142-generic #146-Ubuntu SMP Tue Apr 13 01:11:19 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/tez.sh
git revision	master / 0ccf440
Max. process+thread count	71 (vs. ulimit of 5500)
modules	C: docs U: docs
Console output	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-148/1/console
versions	git=2.25.1 maven=3.6.3
Powered by	Apache Yetus 0.12.0 https://yetus.apache.org

This message was automatically generated.

[jteagles]

That logo is pretty big. Scale it down?

[abstractdog]

That logo is pretty big. Scale it down?

yeah, I'll take care of it (forgot to double-check in browser before committing to svn repo)

[abstractdog]

UPDATE: reverted from svn until I can do the proper design locally