broken links (DataDog#7705)

* stray period * updating blog * docker broken link * python page update * node page update

Author: Kaylyn

content/en/agent/docker/_index.md

@@ -228,7 +228,7 @@ Returns `CRITICAL` if an Agent check is unable to send metrics to Datadog, other
 [13]: /infrastructure/livecontainers/
 [14]: /developers/dogstatsd/
 [15]: /developers/dogstatsd/unix_socket/
-[16]: /getitng-started/unified-service-tagging
+[16]: /getting_started/tagging/unified_service_tagging/
 [17]: https://github.com/DataDog/datadog-agent/blob/master/pkg/tagger/collectors/docker_extract.go
 [18]: https://github.com/DataDog/datadog-agent/blob/master/pkg/tagger/collectors/kubelet_extract.go
 [19]: https://github.com/DataDog/datadog-agent/blob/master/pkg/tagger/collectors/ecs_extract.go

content/en/getting_started/tagging/unified_service_tagging.md

@@ -7,7 +7,7 @@ further_reading:
 - link: "/getting_started/tagging/using_tags"
  tag: "Documentation"
  text: "Learn how to use tags in the Datadog app"
-- link: "/blog/autodiscovery-docker-monitoring"
+- link: "https://www.datadoghq.com/blog/autodiscovery-docker-monitoring/"
  tag: "Blog"
  text: "Learn more about Autodiscovery"
 ---

content/en/getting_started/tracing/_index.md

@@ -161,6 +161,6 @@ After a few minutes, your trace displays in Datadog under the `hello` service. C
 [9]: https://app.datadoghq.com/infrastructure
 [10]: /agent/guide/agent-configuration-files/#agent-main-configuration-file
 [11]: /getting_started/tagging/unified_service_tagging
-[12]: /tracing/guide/setting_primary_tags_to_scope.
+[12]: /tracing/guide/setting_primary_tags_to_scope/
 [13]: https://app.datadoghq.com/apm/services
 [14]: https://app.datadoghq.com/apm/traces

content/en/tracing/setup/nodejs.md

@@ -226,7 +226,7 @@ For details about how to how to toggle and configure plugins, check out the [API
 [6]: /tracing/setup/docker/
 [7]: /agent/kubernetes/apm/
 [8]: https://datadog.github.io/dd-trace-js/#tracer-settings
-[9]: /getting_started/unified_service_tagging
+[9]: /getting_started/tagging/unified_service_tagging
 [10]: /help/
 [11]: https://datadog.github.io/dd-trace-js/#integrations
 [12]: https://github.com/senchalabs/connect

content/en/tracing/setup/python.md

@@ -168,7 +168,7 @@ The `ddtrace` library includes support for the following libraries:
 [5]: http://pypi.datadoghq.com/trace/docs
 [6]: http://pypi.datadoghq.com/trace/docs/advanced_usage.html#ddtracerun
 [7]: /tracing/guide/setting_primary_tags_to_scope/
-[8]: /getting_started/unified_service_tagging
+[8]: /getting_started/tagging/unified_service_tagging/
 [9]: http://pypi.datadoghq.com/trace/docs/web_integrations.html?highlight=django#django
 [10]: http://pypi.datadoghq.com/trace/docs/advanced_usage.html#priority-sampling
 [11]: /tracing/connect_logs_and_traces/python/