Update README.md remove dummy values

DataConnectors/microsoft-logstash-output-azure-loganalytics/README.md

@@ -68,8 +68,8 @@ input {
 }
 output {
     microsoft-logstash-output-azure-loganalytics {
-      workspace_id => "4g5tad2b-a4u4-147v-a4r7-23148a5f2c21" # <your workspace id>
-      workspace_key => "u/saRtY0JGHJ4Ce93g5WQ3Lk50ZnZ8ugfd74nk78RPLPP/KgfnjU5478Ndh64sNfdrsMni975HJP6lp==" # <your workspace key>
+      workspace_id => "" # <your workspace id>
+      workspace_key => "" # <your workspace key>
       custom_log_table_name => "tableName"
     }
 }
@@ -87,8 +87,8 @@ input {
 }
 output {
     microsoft-logstash-output-azure-loganalytics {
-      workspace_id => "4g5tad2b-a4u4-147v-a4r7-23148a5f2c21" # <your workspace id>
-      workspace_key => "u/saRtY0JGHJ4Ce93g5WQ3Lk50ZnZ8ugfd74nk78RPLPP/KgfnjU5478Ndh64sNfdrsMni975HJP6lp==" # <your workspace key>
+      workspace_id => "" # <your workspace id>
+      workspace_key => "" # <your workspace key>
       custom_log_table_name => "tableName"
     }
 }