change: Disable git info (#124)

With `enableGitInfo` set to `true` the docsy theme shows information
about the most recent commit to the file at the bottom of some pages.

This is

a. Inconsistent -- it only appears at the bottom of blog pages.
b. Actively misleading -- e.g. right now the bottom of
nivenly.org/blog/2024/12/31/nivenlys-2024-financial-report/ looks like:

> Last modified August 30, 2025: feat(blog): Announce Pachli 2.16.0 (#118) (47ff4b6)

That might make you think that commit also modified the financial report
blog entry. It didn't, the footer is showing the most recent commit to
the site as a whole.

So, disable the feature.

Author: nikclayton

config.toml

@@ -10,8 +10,8 @@ enableMissingTranslationPlaceholders = true
 
 enableRobotsTXT = true
 
-# Will give values to .Lastmod etc.
-enableGitInfo = true
+# Disable fetching and displaying git commit info on some pages.
+enableGitInfo = false
 enableEmoji = true
 
 ignoreFiles = ["data/validate.sh", "data/(.*).schema.json", "data/README.md"]