Update docs/examples/metrics/reader/README.rst

Co-authored-by: Emídio Neto <[email protected]>

Author: Jayclifford345

docs/examples/metrics/reader/README.rst

@@ -6,7 +6,7 @@ These examples show how to customize the metrics that are output by the SDK usin
 * preferred_aggregation.py: Shows how to configure the preferred aggregation for metric instrument types.
 * preferred_temporality.py: Shows how to configure the preferred temporality for metric instrument types.
 * preferred_exemplarfilter.py: Shows how to configure the exemplar filter.
-* synchronous_gauge_reader.py: Shows how to use `PeriodicExportingMetricReader` in a synchronous manner to explicitly control the collection of metrics.
+* synchronous_gauge_read.py: Shows how to use `PeriodicExportingMetricReader` in a synchronous manner to explicitly control the collection of metrics.
 
 The source files of these examples are available :scm_web:`here <docs/examples/metrics/reader/>`.