Use full metric name

Author: yvrhdn

.chloggen/tailsamplingprocessor-fixed-sampling-decision-metrics.yaml

@@ -7,7 +7,7 @@ change_type: bug_fix
 component: tailsamplingprocessor
 
 # A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
-note: Fixed sampling decision metrics `otelcol_processor_tail_sampling_sampling_trace_dropped_too_early` and `sampling_policy_evaluation_error`, These were sometimes overcounted.
+note: Fixed sampling decision metrics `otelcol_processor_tail_sampling_sampling_trace_dropped_too_early` and `otelcol_processor_tail_sampling_sampling_policy_evaluation_error_total`, these were sometimes overcounted.
 
 # Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
 issues: [37212]