auto-fix singleton capital letter in author name

See #28, release log:

• f7ec26b by @yegor256: #28 rultor
• 35a41ab by @yegor256: #28 test
• b7b38c7 by @yegor256: #28 test
• 9fd5e63 by @yegor256: #28 typo
• cb0cf1f by @yegor256: #28 fix pages
• ce80f47 by @yegor256: #28 typo
• ef87584 by @yegor256: #28 add proceedings
• 644518a by @yegor256: #28 auto-fix capitalization
• e8e0985 by @yegor256: #28 auto-fix numbers
• 85be2eb by @yegor256: #28 auto-fix author letters
• fb4fd4d by @yegor256: #28 test added
• 0932863 by @yegor256: really new l3build
• 3354b95 by @yegor256: new l3build
• 9ad54a4 by @yegor256: Merge pull request #27 from ye...
• 9898bd2 by @yegor256: new l3build log format
• 1912291 by @yegor256: #27 rultor 1.18.0
• d7f77e7 by @renovate[bot]: Update teatimeguest/setup-texl...
• 9fd0e86 by @yegor256: #26 fixed again
• cc8d804 by @yegor256: #26 fixed
• 89cd039 by @renovate[bot]: Update teatimeguest/setup-texl...

Released by Rultor 1.74.7, see build log