fix forward slash to backslash for previous fix

src/modules/punk/winlnk-999999.0a1.0.tm

@@ -615,7 +615,7 @@ tcl::namespace::eval punk::winlnk {
             if {"windows" eq $::tcl_platform(platform)} {
                 set link_target [file join $localbase_path $suffix_path]
             } else {
-                if {[regexp {([a-zA-Z]):/(.*)} $localbase_path _match drive_letter tail]} {
+                if {[regexp {([a-zA-Z]):\\(.*)} $localbase_path _match drive_letter tail]} {
                     set link_target ""
                     #shortcut basepath is a windows path with drive letter - try to resolve it on unix by looking for a corresponding mount from fstab or a point under /mnt
                     set mountinfo [exec mount]