Update crates/utils/re_int_histogram/src/tree.rs

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>

Author: joelreymont

crates/utils/re_int_histogram/src/tree.rs

@@ -251,7 +251,7 @@ impl Int64Histogram {
     /// Returns `None` if no such key exists (including when the histogram is empty).
     ///
     /// This is an O(log n) operation that efficiently traverses the trie structure.
-    pub fn prev_key_before(&self, time: i64) -> Option<i64> {
+    pub fn prev_key(&self, time: i64) -> Option<i64> {
         let time_u64 = u64_key_from_i64_key(time);
         self.root
             .max_key_before(0, ROOT_LEVEL, time_u64)