Can't use org-edit-special in org-mode with plantuml (puml-mode)

[EMayej]

Description

Can't use org-edit-specil with plantuml

Reproduction guide 🪲

• Start Emacs
• Open test.org
• Type in below text

# BEGIN_SRC plantuml :file x.svg
  Alice -> Bob : Hello
# END_SRC

• SPC m ' (which calls org-edit-special)

Observed behaviour: 👀 💔
emacs reports no plantuml-mode

Expected behaviour: ❤️ 😄
a new window opens with puml-mode

Possible solution:
https://github.com/skuro/puml-mode#integration-with-org-mode

System Info 💻

• OS: darwin
• Emacs: 25.1.1
• Spacemacs: 0.105.22
• Spacemacs branch: develop (rev. cf951a5)
• Graphic display: t
• Distribution: spacemacs
• Editing style: vim
• Completion: ivy
• Layers:

(ivy
 (auto-completion :variables auto-completion-enable-snippets-in-popup t)
 clojure semantic dash emacs-lisp fasd git plantuml graphviz org osx ranger shell-scripts
 (python :variables python-test-runner 'pytest)
 (shell :variables shell-default-shell 'eshell shell-default-height 30 shell-default-position 'bottom)
 spell-checking syntax-checking)

[Mitchicus]

Yes, and also for this layer it could be handy to document that you may need to set puml-plantuml-jar-path. I got tripped up on this when the layer was added and replaced my own config.

I'll make a PR briefly to fix this issue