Update index.md

tutorial/content/labs/instrumentation/manual/metrics/index.md

@@ -271,7 +271,7 @@ Each metric consists of two main parts.
 First, there is information to identify the instrument (e.g. name, kind, unit, and description).
 Second, the `data` second contains a list of `data_points`, which are measurements recorded by the instrument.
 Each measurement typically consists of a `value`, `attributes`, and a `timestamp`.
-The `aggregation_temporality` indicates whether the metric is cumulative, and is_monotonic specifies whether the metric only increases (or decreases, in the case of a gauge). This model is designed to be flexible and extensible, ensuring compatibility with existing monitoring systems and standards like Prometheus and StatsD, facilitating interoperability with various monitoring tools.
+The `aggregation_temporality` indicates whether the metric is cumulative, and `is_monotonic` specifies whether the metric only increases (or decreases, in the case of a gauge). This model is designed to be flexible and extensible, ensuring compatibility with existing monitoring systems and standards like Prometheus and StatsD, facilitating interoperability with various monitoring tools.
 
 ### metric dimensions