Fix typo in example plugin (#197)

The function name is [exponential!](https://hexdocs.pm/prom_ex/PromEx.BucketGenerator.html#exponential!/3) (with the `!`).
akoutmos · Apr 20, 2023 · a223be3 · a223be3
1 parent b52c787
commit a223be3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/guides/howtos/Writing PromEx Plugins.md b/guides/howtos/Writing PromEx Plugins.md
@@ -44,7 +44,7 @@ defmodule MyApp.PromEx.Plugins.MyPhoenix do
           measurement: :duration,
           description: "The time it takes for the application to respond to HTTP requests.",
           reporter_options: [
-            buckets: exponential(1, 2, 12)
+            buckets: exponential!(1, 2, 12)
           ],
           tag_values: get_conn_tags(phoenix_router),
           tags: http_metrics_tags,