Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 988c286efe09c01db6f2e41f0ce4b2f49f92d1a6
  - 500 error at WFD artifact-deliveries api
    
    Change-Id: I9227387c26b6ee4c68c635b78c4980a9c07b3d35
    Issue-ID: SDC-3052
    Signed-off-by: Ben David, Elad (eb7504) <eb7504@intl.att.com>
    
diff --git a/docs/submodules/sdc.git b/docs/submodules/sdc.git
index d426d3a..988c286 160000
--- a/docs/submodules/sdc.git
+++ b/docs/submodules/sdc.git
@@ -1 +1 @@
-Subproject commit d426d3a68f0cd5313cc7d543f74af97580e59493
+Subproject commit 988c286efe09c01db6f2e41f0ce4b2f49f92d1a6