debian: remove doublicated project name in example files

For example:
/usr/share/doc/osmo-sgsn/examples/osmo-sgsn/osmo-sgsn.cfg -> /usr/share/doc/osmo-sgsn/examples/osmo-sgsn.cfg

Change-Id: I77f9665e78e3e55910efb30cb50cefdb138e19f7
3 files changed