Added WA Index 87 (#228)

Released/Gen 8/Wild Area Events/readme.md

@@ -86,6 +86,7 @@
 - [Index 084](Index%20084) - [Wild Area Event #42](#Wild-Area-Event-42-monthly-default-2021)
 - [Index 085](Index%20085) - [Wild Area Event #53](#Wild-Area-Event-53-Meteorite-Event-2021)
 - [Index 086](Index%20086) - [Wild Area Event #42](#Wild-Area-Event-42-monthly-default-2021)
+- [Index 087](Index%20087) - [Wild Area Event #54](#Wild-Area-Event-54-Alolan-Starters)
 
 ## Instructions
 To import these files into your save, use PKHeX's block importing function. Our [tutorial](https://projectpokemon.org/tutorials/save-editing/gen-8_157/block-editing-r106/) should guide you through it.
@@ -402,3 +403,9 @@ Only the files "normal_encount", "normal_encount_rigel2" and "normal_encount_rig
 ## [Wild Area Event #53: Meteorite Event 2021](https://projectpokemon.org/home/files/file/4561-wild-area-event-53-meteorite-event-2021/)
 This is a Wild Area event held by Sword and Shield. This event gives players a chance 2% to find a guaranteed Shiny Solrock or Shiny Lunatone in 5-star raids.
 Only the files normal_encount, normal_encount_rigel1, normal_encount_rigel2 ,and dai_encount were updated to Index 85. 
+
+## [Wild Area Event #54: Alolan Starters](https://projectpokemon.org/home/files/file/4583-wild-area-event-54-alolan-starters/)
+This is a Wild Area event held by Sword and Shield. This event gives players a chance to capture the Alolan Starters.
+An interesting note, is you could try to catch them with other types of Poké Balls, which couldn't be done previously.
+Only the files normal_encount, normal_encount_rigel1, normal_encount_rigel2, and dai_encount were updated to Index 87. 
+