*/Contributions.txt: Update example email address

Use the example.com domain as recommended in RFC 2606.

NOTE: This does not modify the wording of the "TianoCore Contribution
      Agreement 1.0" section

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Bruce Cran <bruce.cran@gmail.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16724 6f19259b-4bc3-4df7-8a09-765794883524
diff --git a/EdkShellPkg/Contributions.txt b/EdkShellPkg/Contributions.txt
index 1985677..f87cbd7 100644
--- a/EdkShellPkg/Contributions.txt
+++ b/EdkShellPkg/Contributions.txt
@@ -46,13 +46,13 @@
 

 === Start of sample patch email message ===

 

-From: Contributor Name <contributor@email.server>

+From: Contributor Name <contributor@example.com>

 Subject: [PATCH] CodeModule: Brief-single-line-summary

 

 Full-commit-message

 

 Contributed-under: TianoCore Contribution Agreement 1.0

-Signed-off-by: Contributor Name <contributor@email.server>

+Signed-off-by: Contributor Name <contributor@example.com>

 ---

 

 An extra message for the patch email which will not be considered part