meta-tegra-bug-report: cleanup and fix links
meta-tegra-bug-report: cleanup and fix links

Use markdown.

Remove relative link which doesn't work and use link to README.md
getting help section instead.

Signed-off-by: Dan Walkes <1853477f5849bd091a945c4672065016fd4c2842@boulderai.com>

madisongh/meta-tegra,madisongh/meta-tegra,madisongh/meta-tegra,madisongh/meta-tegra,madisongh/meta-tegra