docs: bring back punctuation at end of points

CONTRIBUTING.md

@@ -4,35 +4,35 @@ Before we get started, thank you for thinking about doing so!
 
 ## Through an issue
 
-- Be excellent to each other. Adhere to the [code of conduct]
+- Be excellent to each other. Adhere to the [code of conduct].
 - About the title: If you had 5 seconds to tell someone the essence of the issue, what would it be?
 
 ### Bugs
 
-- Write out in detail which steps in which order are necessary to reproduce the bug
-- Include environmental information as well, in specific
+- Write out in detail which steps in which order are necessary to reproduce the bug.
+- Include environmental information as well, in specific:
   - How did you install iOwO?
   - What version of iOwO are you running?
   - What operating system are you running?
-    In the case of a Linux distro, mention the specific distro and when you last update as well
-- If the bug causes a crash, try to get a backtrace or in worse cases, a coredump
+    In the case of a Linux distro, mention the specific distro and when you last update as well.
+- If the bug causes a crash, try to get a backtrace or in worse cases, a coredump.
 
 ### Feature requests
 
 - Be sure to include a motivation in which case your intended feature would be used
-  even if it seems obvious to you
-- Estimate what would be needed to implement the feature
+  even if it seems obvious to you.
+- Estimate what would be needed to implement the feature:
   - Is it an addition to the language itself?
   - Is it just a new command?
   - Does it ground-breakingly change how iOwO works?
 
 ## Through a PR
 
-1. Clone the repo
-2. Switch to a new appropiately named branch for what you want to do, using `git switch -c`
-3. Implement your code changes with your favorite code editor
-4. Try them with `cargo run`
-5. If there are errors or warnings, go to step 3. Commit occasionally
+1. Clone the repo.
+2. Switch to a new appropiately named branch for what you want to do, using `git switch -c`.
+3. Implement your code changes with your favorite code editor.
+4. Try them with `cargo run`.
+5. If there are errors or warnings, go to step 3. Commit occasionally.
 6. Otherwise,
   - if you have an account at https://forge.katzen.cafe,
     1. fork the repo
@@ -80,9 +80,9 @@ If you want to contribute art or the like, do that in whatever **you** are most
 
 ### Major decisions
 
-- All current maintainers have to agree **unanimously**
-- Agreement must be based on [informed consent]
-  - In effect, a maintainer has to understand what they agree to
+- All current maintainers have to agree **unanimously**.
+- Agreement must be based on [informed consent].
+  - In effect, a maintainer has to understand what they agree to.
 
 # Interacting with PRs
 
@@ -90,8 +90,8 @@ Remember, be respectful.
 Entities invest their free time and motivation into making these changes,
 treat them appropiately.
 
-- Since in iOwO, we mostly work based on forks, [git's remotes] work fairly good
-- Replace things in pointy brackets (`<>`) respectively (and remove the pointy brackets)
+- Since in iOwO, we mostly work based on forks, [git's remotes] work fairly good.
+- Replace things in pointy brackets (`<>`) respectively (and remove the pointy brackets).
 
 ## Initial steps for a new contributor or new local checkout
 
@@ -102,8 +102,8 @@ git remote update <contributor-name>
 
 ## After setting up the remote
 
-- You can repeat this step anytime you want to switch branches or update your local checkout
-- The PR branch is visible just below the PR title on Forgejo, after the colon (`:`)
+- You can repeat this step anytime you want to switch branches or update your local checkout.
+- The PR branch is visible just below the PR title on Forgejo, after the colon (`:`).
 
 ```sh
 git switch <pr-branch>