Rename the first parameter of Randomizer::getFloat() to $boundary

Author: TimWolla

ext/random/random.stub.php

@@ -135,7 +135,7 @@ public function nextInt(): int {}
 
         public function nextFloat(): float {}
 
-        public function getFloat(float $min, float $max, IntervalBoundary $bounds = IntervalBoundary::ClosedOpen): float {}
+        public function getFloat(float $min, float $max, IntervalBoundary $boundary = IntervalBoundary::ClosedOpen): float {}
 
         public function getInt(int $min, int $max): int {}