Slider, Sash, Shell, ...)

Fix javadoc warnings in nightly build:
../../../eclipse.platform.ui/bundles/org.eclipse.ui.forms/src/org/eclipse/ui/forms/widgets/SectionFactory.java:77:
warning: no description for @param
	 * @param style
	   ^
../../../eclipse.platform.ui/bundles/org.eclipse.ui.forms/src/org/eclipse/ui/forms/widgets/SectionFactory.java:99:
error: reference not found
	 * {@link #create(Composite)}
	          ^
1 error
1 warning

Change-Id: I51c0b1c1ce08bd5574124028542582fcd3549e60
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>