Trim starting `/` from relative entry path
Trim starting `/` from relative entry path

While calculating the relative path, trim away the starting `/`. Otherwise,
`dest.join` ends up ignoring `dest` altogether and tries to create the directory
under root (say `/posts`).

Signed-off-by: Rohan Jain <f3a935f2cb7c3d75d1446a19169b923809d6e623@gmail.com>

leesdolphin/cobalt.rs,leesdolphin/cobalt.rs,johannhof/cobalt.rs,johannhof/cobalt.rs,leesdolphin/cobalt.rs,johannhof/cobalt.rs,johannhof/cobalt.rs,cobalt-org/cobalt.rs,cobalt-org/cobalt.rs,leesdolphin/cobalt.rs,cobalt-org/cobalt.rs,cobalt-org/cobalt.rs