Docs: Corrects name of C4 link

[Incognito]

📑 Summary

Corrects "C4C Diagram" to "C4 Diagram". If you don't know enough about C4 and the history of changes I've summarized all the context you need to know below here. I think this is important because Mermaid is quite popular and this may lead people to believe the diagramming model is really called "C4C" instead of "C4". Additionally, it may look like Mermaid doesn't support C4 as people are expecting find C4.

Context:

C4 is a technique to model and diagram architecture at 4 levels (context, containers, components & code -- this is why it has the name "C4"), and there are additional views on it that can be taken too (dynamic, deployment)

The Existing implementation in Mermaid's C4 Models covers these implementations (as per Mermaid docs):

• System Context (C4Context)
• Container diagram (C4Container)
• Component diagram (C4Component)
• Dynamic diagram (C4Dynamic)
• Deployment diagram (C4Deployment)

I believe that the original contributor called it C4C to indicate that this feature only supported context diagrams (which is why (context) is added in the title and the C was added to the end of C4) but this is no longer true. It was true in the initial commit 113efd1 13 months ago. Mermaid now supports the majority of C4 levels.

The title was corrected from C4C to C4 in the c4c.md file in commit 0c5b494 (merged in 0c5b4948 shortly afterwards but not in the docs/_sidebar.md which has since been replaced with this file. The old name was carried forward automatically in e34e2087 Add auto generated docs 11 months ago and has remained ever since.

[codecov]

Codecov Report

Merging #4660 (91ae9a2) into master (9347353) will decrease coverage by 18.74%.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #4660       +/-   ##
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- Coverage   76.73%   58.00%   -18.74%     
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  Files         137       51       -86     
  Lines       16296     8637     -7659     
  Branches      496       19      -477     
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- Hits        12505     5010     -7495     
+ Misses       3677     3627       -50     
+ Partials      114        0      -114     

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see 132 files with indirect coverage changes

[aloisklink]

Looks good to me!

We might even want to rename the /syntax/c4c.md file to /syntax/c4.md, but we'd need to somehow redirect the old URL to the new URL, and I'm not sure how difficult that would be!

Pinging @pinghe (the original author of C4 diagrams), in case they also want to give some feedback!

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[pinghe]

@Incognito @aloisklink
Indeed, I was initially only going to complete the System Context (C4Context), but it was all implemented when I actually developed it. Thanks for the contributions!