[bootlin/training-materials] ffa305: Embedded Linux: fix font referring to "core" file

[Michael Opdenacker]

  Branch: refs/heads/master
  Home:   https://github.com/bootlin/training-materials
  Commit: ffa305fd312aca64dc7b19fbb648bb31e2c82be8
      https://github.com/bootlin/training-materials/commit/ffa305fd312aca64dc7b19fbb648bb31e2c82be8
  Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
  Date:   2022-04-14 (Thu, 14 Apr 2022)

  Changed paths:
    M slides/sysdev-application-development/sysdev-application-development.tex

  Log Message:
  -----------
  Embedded Linux: fix font referring to "core" file

Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>