Add transform processor registry (#1852)

content/en/registry/collector-processor-transform.md

@@ -0,0 +1,15 @@
+---
+title: Transform Processor
+registryType: processor
+isThirdParty: false
+language: collector
+tags:
+  - go
+  - processor
+  - collector
+repo: https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/processor/transformprocessor
+license: Apache 2.0
+description: The Transform Processor for the OpenTelemetry Collector can be used to transform any fields on traces, metrics, and logs within the collector. It utilizes a transformation language to define transformations and conditions and then applies those transformations to the specified telemetry.
+authors: OpenTelemetry Authors
+otVersion: latest
+---