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Update MetricsQL.md (#2519)

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remove typo from label_replace doc.
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Peter Dupej 2022-05-02 08:42:58 +02:00 committed by Aliaksandr Valialkin
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@ -774,7 +774,7 @@ sum by (__name__) (
#### label_replace
`label_replace(q, "dst_label", "replacement", "src_label", "regex")` applies the given `regex` to `src_label` and stores the `replacement` in `dst_label` if the given `regex` matches `src_label`. The `replacement` may contain references to regex captures such as `$1`, `$2`, etc. These references are substituted by the corresponding regex captures. For example, `label_replace(up{job="node-exporter"}, "foo", "bar-$1", "job", "node-(.+)")` would store `bar-node-exporter` label value into `foo` label. This function is supported by PromQL.
`label_replace(q, "dst_label", "replacement", "src_label", "regex")` applies the given `regex` to `src_label` and stores the `replacement` in `dst_label` if the given `regex` matches `src_label`. The `replacement` may contain references to regex captures such as `$1`, `$2`, etc. These references are substituted by the corresponding regex captures. For example, `label_replace(up{job="node-exporter"}, "foo", "bar-$1", "job", "node-(.+)")` would store `bar-exporter` label value into `foo` label. This function is supported by PromQL.
#### label_set