fix(ci-bot): make list indentation be 2 spaces

This is what Discord accepts and it doesn't render properly otherwise.

Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: Iaf9ae8c428c407b0866fa04952189aa8d8d5e0fe
diff --git a/script/status_reporting/ci_status_bot.py b/script/status_reporting/ci_status_bot.py
index cb1cec3..68d91d3 100644
--- a/script/status_reporting/ci_status_bot.py
+++ b/script/status_reporting/ci_status_bot.py
@@ -105,7 +105,7 @@
         return message
 
     def __str__(self) -> str:
-        return (f"{' ' * self.level * 4}* {'✅' if self.passed else '❌'} "
+        return (f"{' ' * self.level * 2}* {'✅' if self.passed else '❌'} "
                 f"**{self.name}** [#{self.build_number}]({self.url})\n"
                )