updates on user guides, for all use cases

updates on user guides, for all use cases

JIRA: Auto-26

Removed all trailing spaces, but left the higher-level headlines for the titles. Will remove if it is recommended for style.

Signed-off-by: Gerard Damm <gerard.damm@wipro.com>
 On branch update_userguide
 Changes to be committed:
	modified:   docs/release/userguide/UC01-feature.userguide.rst
	modified:   docs/release/userguide/UC02-feature.userguide.rst
	modified:   docs/release/userguide/UC03-feature.userguide.rst

Change-Id: Ic50eb184aa8deb8754f68053989f592967562e96
Signed-off-by: Gerard Damm <gerard.damm@wipro.com>