Use direct link rather than relref in blog post (#6029)

Author: chalin

.cspell/en-words.txt

@@ -111,7 +111,6 @@ quoteservice
 react-native-app
 recommendationservice
 redis
-relref
 Rexed
 runbook
 runbooks

content/en/blog/2023/exponential-histograms.md

@@ -190,12 +190,13 @@ OpenTelemetry’s Exponential Histograms in Prometheus][]
 
 _A version of this article was [originally posted][] to the author's blog._
 
-<!-- prettier-ignore-start -->
 [Using OpenTelemetry’s Exponential Histograms in Prometheus]:
   https://www.youtube.com/watch?v=W2_TpDcess8
-[OTEP 149]: https://github.com/open-telemetry/oteps/blob/976c9395e4cbb3ea933d3b51589eba94b87a17bd/text/0149-exponential-histogram.md
-[specification for exponential histogram aggregations]: /docs/specs/otel/metrics/sdk/#base2-exponential-bucket-histogram-aggregation
-[Why Histograms?]: {{% relref "why-histograms" %}}
-[Histograms vs Summaries]: {{% relref "histograms-vs-summaries" %}}
+[OTEP 149]:
+  https://github.com/open-telemetry/oteps/blob/976c9395e4cbb3ea933d3b51589eba94b87a17bd/text/0149-exponential-histogram.md
+[specification for exponential histogram aggregations]:
+  /docs/specs/otel/metrics/sdk/#base2-exponential-bucket-histogram-aggregation
+[Why Histograms?]: ../why-histograms/
+[Histograms vs Summaries]: ../histograms-vs-summaries/
+
 [originally posted]: {{% param canonical_url %}}
-<!-- prettier-ignore-end -->