Formatting cleanups to prep for first pre-release
Formatting cleanups to prep for first pre-release

Formatting changes for release document
- Change watermark to show date of document
- Remove "Documentation" from title
- use lowercase instead of CamelCase for filename

Signed-off-by: Grant Likely <9069e6f5a2b566e2674a0ba1e2bf39c12c195fad@linaro.org>

kvekaria/devicetree-specification,devicetree-org/devicetree-specification