elasticsearch span_name not correctly

[zzhutianyu]

Steps to reproduce
Describe exactly how to reproduce the error. Include a code sample if applicable.

What is the expected behavior?
Our index is created on a rolling basis
Therefore, we will use a specific time to query the index when querying, and when the plugin generates span_name, it will bring the unified index, so that span_name cannot be described as an operation. As follows

Elasticsearch/bkfta_action_20220228_read,bkfta_action_20220301_read,bkfta_action_20220302_read,bkfta_action_20220303_read,bkfta_action_20220304_read,bkfta_action_20220305_read,bkfta_action_20220306_read,bkfta_action_20220307_read/_search

What is the actual behavior?
span_name shuld be

Elasticsearch/{index_name}/_search

Additional context
Add any other context about the problem here.

[zzhutianyu]

#1018