[all] Fix security doc links (open-telemetry#14949)

Fix security.md links

README.md

@@ -36,7 +36,7 @@
    •  
  <a href="https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/performance.md">Performance</a>
  &nbsp;&nbsp;&bull;&nbsp;&nbsp;
- <a href="https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/security.md">Security</a>
+ <a href="https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/security-best-practices.md">Security</a>
  &nbsp;&nbsp;&bull;&nbsp;&nbsp;
  <a href="https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/roadmap.md">Roadmap</a>
  </strong>

exporter/coralogixexporter/README.md

@@ -10,7 +10,7 @@
 The Coralogix exporter sends traces, metrics and logs to [Coralogix](https://coralogix.com/).
 
 > Please review the Collector's [security
-> documentation](https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/security.md),
+> documentation](https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/security-best-practices.md),
 > which contains recommendations on securing sensitive information such as the
 > API key required by this exporter.
 

exporter/datadogexporter/README.md

@@ -8,7 +8,7 @@
 | Supported pipeline types | traces, metrics, logs|
 | Distributions | [contrib], [AWS] |
 
-> Please review the Collector's [security documentation](https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/security.md), which contains recommendations on securing sensitive information such as the API key required by this exporter.
+> Please review the Collector's [security documentation](https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/security-best-practices.md), which contains recommendations on securing sensitive information such as the API key required by this exporter.
 
 Visit the [official documentation](https://docs.datadoghq.com/tracing/trace_collection/open_standards/otel_collector_datadog_exporter/) for usage instructions.
 

exporter/dynatraceexporter/README.md

@@ -18,7 +18,7 @@ More information on exporting traces to Dynatrace can be found in the
 
 > The requests sent to Dynatrace are authenticated using an API token mechanism documented [here](https://www.dynatrace.com/support/help/dynatrace-api/basics/dynatrace-api-authentication/). 
 > Please review the Collector's [security
-> documentation](https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/security.md),
+> documentation](https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/security-best-practices.md),
 > which contains recommendations on securing sensitive information such as the
 > API key required by this exporter.
 

exporter/sapmexporter/README.md

@@ -11,7 +11,7 @@ the collector to export traces from multiples nodes/services in a single batch.
 and some useful related utilities can be found [here](https://github.com/signalfx/sapm-proto/).
 
 > Please review the Collector's [security
-> documentation](https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/security.md),
+> documentation](https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/security-best-practices.md),
 > which contains recommendations on securing sensitive information such as the
 > API key required by this exporter.