fix: improve clarity and grammar in pull request template

Author: mgunnin

.github/pull_request_template.md

@@ -1,15 +1,15 @@
-<!-- Use this template by filling in information and copy and pasting relevant items out of the html comments. -->
+<!-- Use this template by filling in information and copying and pasting relevant items out of the HTML comments. -->
 
-# Relates to:
+# Relates to
 
 <!-- LINK TO ISSUE OR TICKET -->
 
-<!-- This risks section is to be filled out before final review and merge. -->
+<!-- This risks section must be filled out before the final review and merge. -->
 
 # Risks
 
 <!--
-Low, medium, large. List what kind of risks, and what could be effected.
+Low, medium, large. List what kind of risks and what could be affected.
 -->
 
 # Background
@@ -25,7 +25,7 @@ Features (non-breaking change which adds functionality)
 Updates (new versions of included code)
 -->
 
-<!-- This "Why" section is most relevant if there is no linked issue explaining why. If there is a related issue it might make sense to skip this why section. -->
+<!-- This "Why" section is most relevant if there are no linked issues explaining why. If there is a related issue, it might make sense to skip this why section. -->
 <!--
 ## Why are we doing this? Any context or related work?
 -->
@@ -35,10 +35,10 @@ Updates (new versions of included code)
 <!--
 My changes do not require a change to the project documentation.
 My changes require a change to the project documentation.
-If a docs change is needed: I have updated the documentation accordingly.
+If documentation change is needed: I have updated the documentation accordingly.
 -->
 
-<!-- Please show how you tested the PR. This will really help if the PR needs to be retested, and probably help the PR get merged quicker. -->
+<!-- Please show how you tested the PR. This will really help if the PR needs to be retested and probably help the PR get merged quicker. -->
 
 # Testing
 
@@ -47,7 +47,7 @@ If a docs change is needed: I have updated the documentation accordingly.
 ## Detailed testing steps
 
 <!--
-None, automated tests are fine.
+None: Automated tests are acceptable.
 -->
 
 <!--
@@ -63,22 +63,22 @@ None, automated tests are fine.
 ### After
 -->
 
-<!-- If there is anything about the deploy, please make a note. -->
+<!-- If there is anything about the deployment, please make a note. -->
 <!--
 # Deploy Notes
 -->
 
-<!--  Copy and paste commandline output. -->
+<!--  Copy and paste command line output. -->
 <!--
 ## Database changes
 -->
 
-<!--  If there is something more than the automated steps, please specifiy deploy instructions. -->
+<!--  Please specify deploy instructions if there is something more than the automated steps. -->
 <!--
 ## Deployment instructions
 -->
 
-<!-- If you are on Discord, please join https://discord.gg/ai16z and state your Discord username here for contribute role and join us in #development-feed -->
+<!-- If you are on Discord, please join https://discord.gg/ai16z and state your Discord username here for the contributor role and join us in #development-feed -->
 <!--
 ## Discord username