Refine the lkrz format

prefix players section with "player" for ease of use. Replace 'link' in
the 'Tournament' section by a simpler 'slug'.

lokrez/results.sample.lkrz

@@ -2,17 +2,18 @@
 name : Tournament Name
 date : 1900-01-01
 location : Lyon - Reboot
-videogame : SSBU
-link : https://smash.gg/tournament/tournament-slug
+slug : tournament-slug
 numEntrants : 0
 
-[gamerTag1]
+[player gamerTag1]
+tag = gamerTag1
 team : Team
 seeding : 0
 placement : 0
 characters : link (2), incineroar
 
-[gamerTag2]
+[player gamerTag2]
+tag = gamerTag2
 team : Team2
 seeding : 0
 placement : 0