Update deprecate_sapmexporter.yaml

minor update to description

Author: asreehari-splunk

.chloggen/deprecate_sapmexporter.yaml

@@ -16,7 +16,7 @@ issues: [36028]
 # These lines will be padded with 2 spaces and then inserted directly into the document.
 # Use pipe (|) for multiline entries.
 subtext: |
-  The SAPM exporter is deprecated. Please use the `otlphttp` exporter with the configuration shown
+  The SAPM exporter is being marked as deprecated. Please use the `otlphttp` exporter with the configuration shown
   below. Also update your pipeline configuration for Traces accordingly.
   ```yaml
     exporters:
@@ -33,4 +33,4 @@ subtext: |
 # Include 'user' if the change is relevant to end users.
 # Include 'api' if there is a change to a library API.
 # Default: '[user]'
-change_logs: []
+change_logs: []