Fix the coding-standard errors CI caught

Fix the coding-standard errors CI caught Four sniff errors reached the branch because my local check measured the wrong copy: phpcbf was run inside the throwaway Drupal site, phpcs was then run there too and reported clean, and the fixes never came back to the repository — which the next sync promptly overwrote. The repository is the source of truth and the site is a scratch copy, so the sync only ever goes one way from now on. Three of the four are headings and a comment needing a full stop or a capital. The two mentioning damrs are rephrased rather than capitalised: the product name is deliberately lower case, and "Damrs" to satisfy a sniff would be worse than the sentence being turned around.