Previous value of #f lead to `head reload nginx' returning exit code 1,
complicating usage from scripts (and other actions). Returning #t fixes that.
Any actual failures are still covered by the invoke call above.
* gnu/services/web.scm (nginx-shepherd-service)[nginx-action]<-s>: Return #t.
Change-Id: I4ce1645798a85baddeb0f5bd702a2567db3c7aaa
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
