```ruby
# coding: utf-8

Gem::Specification.new do |s|
  s.name          = 'asciidoctor-diagram-plantuml'
  s.version       = '1.2022.1'
  s.authors       = ['Pepijn Van Eeckhoudt']
  s.email         = ['pepijn@vaneeckhoudt.net']
  s.description   = %q{PlantUML JAR files wrapped in a Ruby gem}
  s.summary       = %q{PlantUML JAR files wrapped in a Ruby gem}
  s.homepage      = 'https://github.com/asciidoctor/asciidoctor-diagram'
  s.license       = 'Apache Software License Version v2'

  s.files         = Dir['**/*']
  s.require_paths = ['lib']
end
```

Update PlantUML gem license to correct SPDX identifier
user
```ruby
# coding: utf-8

Gem::Specification.new do |s|
  s.name          = 'asciidoctor-diagram-plantuml'
  s.version       = '1.2022.1'
  s.authors       = ['Pepijn Van Eeckhoudt']
  s.email         = ['pepijn@vaneeckhoudt.net']
  s.description   = %q{PlantUML JAR files wrapped in a Ruby gem}
  s.summary       = %q{PlantUML JAR files wrapped in a Ruby gem}
  s.homepage      = 'https://github.com/asciidoctor/asciidoctor-diagram'
  s.license       = 'Apache-2.0'

  s.files         = Dir['**/*']
  s.require_paths = ['lib']
end
```
assistant