Changes the following example index names to `my-index-000001` for consistency: * `my-index` * `my_index` * `myindex`
* [DOCS] Refactored index-templates topic. * [DOCS] Add separate files. * [DOCS] Add delete component template. * Apply suggestions from code review Co-authored-by: James Rodewig <james.rodewig@elastic.co> * [DOCS] Incorporated review comments