update snmp doc

docs/sources/reference/components/prometheus/prometheus.exporter.snmp.md

@@ -48,7 +48,7 @@ Omitted fields take their default values.
 | `targets`     | `list(map(string))`  | SNMP targets.                                    |         | no       |
 
 The `config_file` argument points to a YAML file defining which snmp_exporter modules to use.
-Refer to [snmp_exporter](https://github.com/prometheus/snmp_exporter#generating-configuration) for details on how to generate a configuration file.
+Refer to [snmp_exporter](https://github.com/prometheus/snmp_exporter/tree/v0.26.0?tab=readme-ov-file#configuration) for details on how to generate a configuration file.
 
 The `config` argument must be a YAML document as string defining which SNMP modules and auths to use.
 `config` is typically loaded by using the exports of another component. For example,

go.mod

@@ -164,7 +164,7 @@ require (
 	github.com/prometheus/node_exporter v1.6.0
 	github.com/prometheus/procfs v0.15.1
 	github.com/prometheus/prometheus v0.54.1 // a.k.a. v2.51.2
-	github.com/prometheus/snmp_exporter v0.26.0
+	github.com/prometheus/snmp_exporter v0.26.0 // if you update the snmp_exporter version, make sure to update the links in prometheus.exporter.snmp
 	github.com/prometheus/statsd_exporter v0.22.8
 	github.com/richardartoul/molecule v1.0.1-0.20221107223329-32cfee06a052
 	github.com/rogpeppe/go-internal v1.12.0