fix docs, missing trusted=yes on first pass

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>

tools/doc-sbuild.txt

@@ -4,8 +4,8 @@ sudo sbuild-shell source:bullseye-arm64-sbuild
 cat /etc/apt/sources.list ; \
 echo "deb http://proxy.gfnd.rcn-ee.org:3142/deb.debian.org/debian bullseye main" > /etc/apt/sources.list ; \
 echo "deb-src http://proxy.gfnd.rcn-ee.org:3142/deb.debian.org/debian bullseye main" >> /etc/apt/sources.list ; \
-echo "deb http://repos.rcn-ee.net/debian-arm64 bullseye main" >> /etc/apt/sources.list ; \
-echo "deb-src http://repos.rcn-ee.net/debian-arm64 bullseye main" >> /etc/apt/sources.list ; \
+echo "deb [trusted=yes] http://repos.rcn-ee.net/debian-arm64 bullseye main" >> /etc/apt/sources.list ; \
+echo "deb-src [trusted=yes] http://repos.rcn-ee.net/debian-arm64 bullseye main" >> /etc/apt/sources.list ; \
 cat /etc/apt/sources.list ; \
 apt update ; apt install -yq bbb.io-keyring ; \
 echo "deb http://proxy.gfnd.rcn-ee.org:3142/deb.debian.org/debian bullseye main" > /etc/apt/sources.list ; \