Replace SSI Readme by link to confluence (#8927)

Author: bric3

metadata/README.md

@@ -1,16 +1 @@
-# SSI injection metadata
-
-## Adding a new deny metadata.
-
-1. Adding or updating denied Java process metadata in order to avoid enabling the tracer is done by editing 
-   the following files :
-
-    * `base-requirements.json`
-    * `denied-arguments.tsv`
-    * `denied-environment-variables.tsv`
-
-2. Then run the following command to build/update the `requirements.json` file:
-    
-    ```bash
-    ./build-requirements.sh
-    ```
+[SSI injection metadata](https://datadoghq.atlassian.net/wiki/spaces/APMINT/pages/4309975049/SSI+Extend+the+deny-list+to+stop+SSI+to+inject+in+applications)