Fix titles in docker.md

7 jobs for fix_titles_in_docker_doc
Status Job ID Name Coverage
  Tests
manual #52271
redshift manual
tests
 
  Package
created #52273
redshift allowed to fail manual
package:test:docker-test-image
created #52272
redshift allowed to fail manual
releases:test
 
  Quality
created #52275
redshift
audit_dependencies
created #52274
redshift
fmt_and_clippy
 
  Integration
created #52276
redshift allowed to fail manual
sync_g1
created #52277
redshift allowed to fail manual
sync_gtest