examples: Unbreak python example

The method is `trigger_feedback` not `trigger`.
8 jobs for fix-example in 8 minutes and 10 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #359845
librem5
build:native-debian-bullseye

00:01:11

passed #359843
librem5
build:native-debian-buster:full

00:01:14

passed #359844
librem5
build:native-debian-buster:lib

00:01:12

 
  Test
passed #359846
librem5
test:native-debian-bullseye

00:00:46

62.6%
 
  Package
passed #359847
librem5
package:deb-debian-buster

00:01:19

passed #359848
librem5:arm64
package:deb-debian-buster:arm64

00:04:51

 
  Test Package
passed #359849
librem5
autopkgtest-debian-buster-package

00:01:17

passed #359850
librem5
lintian-debian-buster-package

00:01:11