Adding notices about one sentence per line

.github/ISSUE_TEMPLATE/blog-article.md

@@ -8,4 +8,6 @@ By making a submission here, you agree to [BSSw.io content licensing terms](http
 
 You are welcome to submit an *idea* for a blog article or a completed article.
 
+Please ensure your submission uses [one sentence per line](https://asciidoctor.org/docs/asciidoc-recommended-practices/#one-sentence-per-line).
+
 After your submission is received, it will be reviewed by the BSSw.io editorial staff and we will be in touch with you.

.github/ISSUE_TEMPLATE/curated-content.md

@@ -10,3 +10,4 @@ A curated content submission is a couple of paragraphs highlighting an existing
 * Reference (e.g. link, bibliographic data, etc.) to the resource to be highlighted
 * Some of the key points the highlighted article makes 
 * Why you think the highlighted article is relevant to HPC/CSE
+* Please ensure your submission uses [one sentence per line](https://asciidoctor.org/docs/asciidoc-recommended-practices/#one-sentence-per-line).

.github/ISSUE_TEMPLATE/event.md

@@ -31,3 +31,5 @@ The URL will be linked under the text "Event Website", which appears in two plac
 In the published event, this will appear between the **title** and **date** and the **date**, **location**, and **organizers** block, which is above the **description**.  It is styled in a font that is in between the **title** and the **description** in size (which makes long **summary** text take up a lot of space, which generally looks bad).
 
 * **Description:** *The remainder of this issue will be treated as the body of the event.*
+
+Finally, please ensure your submission uses [one sentence per line](https://asciidoctor.org/docs/asciidoc-recommended-practices/#one-sentence-per-line).

docs/pages/bssw/bssw_content_pr_checklist.md

@@ -29,6 +29,7 @@ Resolves #`<issue-id>`
 
 * [ ] ***[Author]*** `@mention` the BSSw.io editorial board member `@<eb-member-id>` in **Description** above assigned to shepherd your PR.
 * [ ] ***[Author]*** Add the `<issue-id>` in the **Description** above for the associated GitHub Issue.
+* [ ] ***[Author]*** ensure the submission uses [one sentence per line](https://asciidoctor.org/docs/asciidoc-recommended-practices/#one-sentence-per-line).
 * ~~[ ] ***[Author]*** Ensure `wikize_refs.py -i <base>.md` is run and commit (if using [wikize_refs.py])~~.
 * [ ] ***[Author]*** Inspect the content in the `*.md` file(s) as rendered in GitHub for this PR.
 * [ ] ***[EB Mem]*** Assign this PR to the EB member `<eb-member-id>`.