examples: fix unusual-interpreter

examples: fix unusual-interpreter

Due to regular lintian checks in Debian packaging it surfaced that these
two scripts had a space in their #! statement which renders it to be
human, but not shell readable.

Fixes: 8673a3e8 ("examples/ip_pipeline: add config diagram generator")
Fixes: fa667b46 ("examples/ip_pipeline: add core mappings script")

This gets rid of lintian warning "W: dpdk-doc: unusual-interpreter"

Change-Id: Ic5fd88467814ed77e0e3e0bb3747b7fa555b5d3a
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>