Update PR template

Author: DouglasOrr

.github/pull_request_template.md

@@ -1,46 +1,12 @@
-Optional preview: after opening the PR, comment `/preview` to publish a public preview and `/unpreview` to remove it. The workflow will reply with the preview URL. Please check for secrets before publishing a preview.
-
-This template includes 3 checklists, only 1 of which is needed for your PR. Please **delete as appropriate** before submitting the PR.
-
-For _Papers of the Month_, there are two types of PR:
-
-1. **Summary PRs:** individual paper summaries on their own branch (`pom-YYYY-MM-<short-name-of-paper>`), to be merged into monthly branch.
-2. **Monthly PRs:** a group of paper summaries on a monthly branch (`pom-YYYY-MM`), to be merged into `main`.
-
----
-
-## Summary PR Checklist
-
-Authors should make an effort to satisfy these criteria, but it is the _editor's job_ to tick them off before accepting the PR (anything that requires the page to be rendered can be left to the editor).
-
-- [ ] Check PR is set to merge into branch `pom-YYYY-MM`, **not** `main`
-- [ ] Check paper author names look reasonable
-- [ ] Check summary author names
-- [ ] Check other frontmatter (content at top of page)
-- [ ] Check paper links actually go to paper
-- [ ] Check tags are aligned with existing tags at https://graphcore-research.github.io/tags/
-- [ ] Check for image alt text
-- [ ] Check plots are high-enough resolution
-- [ ] Check plots look the right size and scale properly by resizing window; if not, use `![Alt text](my_image.png){:.img-medium}`, or `.img-tiny .img-small .img-large` from `assets/custom.css`, or set a specific size with `{:style="max-width: Xpx;"}`.
-- [ ] Review contents of article
-- [ ] Spellcheck
+...
 
 ---
 
-## Monthly PR Checklist
-
-- [ ] Implement chosen ordering of papers
-- [ ] Add title to frontmatter
-- [ ] Write intro blurb
-- [ ] Quickly double-check Summary PR criteria look like they're still satisfied
-- [ ] Make sure it looks ok on a local server with `./dev.sh`
-- [ ] Double check nothing sensitive has been mentioned
-
----
+_Note: after opening the PR, comment `/preview` to publish a public preview and `/unpreview` to remove it. The workflow will reply with the preview URL. Please check for secrets before publishing a preview._
 
-## Blog Post Checklist
+## Blog Post Checklist (delete if not required)
 
-- [ ] (Author) make sure it looks ok on a local server with `./dev.sh`
+- [ ] Make sure it looks ok on a local server with `./dev.sh` OR preview with `/preview` and check the URL in the PR comment; remember to `/unpreview` when done
 - [ ] Check required frontmatter, including `slug`
 - [ ] Check tags are aligned with existing tags at https://graphcore-research.github.io/tags/
 - [ ] Check for image alt text