kgdb,docs: Fix typo and minor style issues
kgdb,docs: Fix typo and minor style issues

Fix up a number of small typos, duplications and formatting issues.

Signed-off-by: Graham Whaley <95f36e5ac6982f4574a5c449c37cf652e934d2b9@linux.intel.com>
Reviewed-by: Daniel Thompson <4421c302a8f2019ff02452a16ddbdd37770f814c@linaro.org>
[jc: did s/kgdbdoc/kgdboc/]
Signed-off-by: Jonathan Corbet <b2ce64d5587c02f12e367eac59751145a0660c51@lwn.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs