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docs/keyConcepts.md: use 1. instead of N. in numbered bullets, so they are automatically adjusted by Github Markdown engine

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@ -213,11 +213,9 @@ This query works in the following way:
1. The `increase(vm_rows_read_per_query_bucket[1h])` calculates per-bucket per-instance
number of events over the last hour.
2. The `sum(...) by (vmrange)` calculates per-bucket events by summing per-instance buckets
1. The `sum(...) by (vmrange)` calculates per-bucket events by summing per-instance buckets
with the same `vmrange` values.
3. The `histogram_quantile(0.99, ...)` calculates 99th percentile over `vmrange` buckets returned at step 2.
1. The `histogram_quantile(0.99, ...)` calculates 99th percentile over `vmrange` buckets returned at step 2.
Histogram metric type exposes two additional counters ending with `_sum` and `_count` suffixes:
@ -271,16 +269,16 @@ implementations of a histogram supported by VictoriaMetrics:
supported by most of
the [client libraries for metrics instrumentation](https://prometheus.io/docs/instrumenting/clientlibs/). Prometheus
histogram requires a user to define ranges (`buckets`) statically.
2. [VictoriaMetrics histogram](https://valyala.medium.com/improving-histogram-usability-for-prometheus-and-grafana-bc7e5df0e350)
1. [VictoriaMetrics histogram](https://valyala.medium.com/improving-histogram-usability-for-prometheus-and-grafana-bc7e5df0e350)
supported by [VictoriaMetrics/metrics](https://github.com/VictoriaMetrics/metrics) instrumentation library.
Victoriametrics histogram automatically handles bucket boundaries, so users don't need to think about them.
We recommend reading the following articles before you start using histograms:
1. [Prometheus histogram](https://prometheus.io/docs/concepts/metric_types/#histogram)
2. [Histograms and summaries](https://prometheus.io/docs/practices/histograms/)
3. [How does a Prometheus Histogram work?](https://www.robustperception.io/how-does-a-prometheus-histogram-work)
4. [Improving histogram usability for Prometheus and Grafana](https://valyala.medium.com/improving-histogram-usability-for-prometheus-and-grafana-bc7e5df0e350)
1. [Histograms and summaries](https://prometheus.io/docs/practices/histograms/)
1. [How does a Prometheus Histogram work?](https://www.robustperception.io/how-does-a-prometheus-histogram-work)
1. [Improving histogram usability for Prometheus and Grafana](https://valyala.medium.com/improving-histogram-usability-for-prometheus-and-grafana-bc7e5df0e350)
#### Summary