[cmc] Rebase include paths to //

See bug for context.

Made with:
find . -type f \( -iname \*.cml -o -iname \*.cmx -o -iname \*.md \) | xargs sed -i 's|"\(\S*\.shard\.cm[lx]"\)|"//\1|g'

Bug: 78683
Change-Id: Ic254bf87f179f22f2186a6eb2440155a6a419c96
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/iperf/+/542706
Reviewed-by: Jay Zhuang <jayzhuang@google.com>
diff --git a/meta/iperf3.cmx b/meta/iperf3.cmx
index a895092..c9de45d 100644
--- a/meta/iperf3.cmx
+++ b/meta/iperf3.cmx
@@ -1,6 +1,6 @@
 {
     "include": [
-        "sdk/lib/diagnostics/syslog/client.shard.cmx"
+        "//sdk/lib/diagnostics/syslog/client.shard.cmx"
     ],
     "program": {
         "binary": "bin/iperf3"