Troubleshooting Intel boards: fix some typos and rendering
Troubleshooting Intel boards: fix some typos and rendering

Fix some typos and rendering for the Troubleshooting document for
Intel Boards (intel-footer.md).

Signed-off-by: Geoffroy Van Cutsem <08e98a76876e333d62e963fc438b664df1072698@intel.com>

leon-anavi/docs-agl,leon-anavi/docs-agl,automotive-grade-linux/docs-agl,claneys/docs-agl,automotive-grade-linux/docs-agl,claneys/docs-agl,claneys/docs-agl,automotive-grade-linux/docs-agl,automotive-grade-linux/docs-agl,leon-anavi/docs-agl,claneys/docs-agl,leon-anavi/docs-agl