Update git submodules

* Update docs/submodules/copper from branch 'master'
  - Fix intro comments

    JIRA: COPPER-16

    Change-Id: I4e3e3a920189316569d7c90789a541de1ce518a6
    Signed-off-by: Bryan Sullivan <bryan.sullivan@att.com>

diff --git a/docs/submodules/copper b/docs/submodules/copper
index fedbb0b..37434bd 160000 (submodule)
--- a/docs/submodules/copper
+++ b/docs/submodules/copper
@@ -1 +1 @@
-Subproject commit fedbb0b9b56eaee4d6bd4edfd93eac738de27baf
+Subproject commit 37434bd4a46f7df1d3e41e9bbe613f3a2827638d