docs/branching.md: fenced code block missing language identifier (MD040)

[coderabbitai]

Summary

The fenced code block containing the ASCII flow diagram in docs/branching.md at line 199 is missing a language identifier, which violates the MD040 markdownlint rule (fenced-code-language).

Details

• File: docs/branching.md
• Line: 199
• Rule: MD040 – Fenced code blocks should have a language specified

Suggested Fix

Add the text language identifier to the opening fence of the ASCII diagram block:

-```
+```text
                  +-----------------+
                  |   main branch   |

References

• PR: LCORE-1645: Contribution and branching documentation #1937
• Review comment: LCORE-1645: Contribution and branching documentation #1937 (comment)

Reported by @tisnik