pre-commit: Fix linter issues in markdown documents

CODE_OF_CONDUCT.md

@@ -9,11 +9,11 @@ communication initiated in the context of these spaces.
 
 Simply put, community discussions should be
 
- * respectful and kind;
- * about Mixxx;
- * about features and code, not the individuals involved.
+* respectful and kind;
+* about Mixxx;
+* about features and code, not the individuals involved.
 
-## Be respectful and constructive.
+## Be respectful and constructive
 
 Treat everyone with respect. Build on each other's ideas. Each of us has the
 right to enjoy our experience and participate without fear of harassment,
@@ -23,7 +23,7 @@ communicating with someone in their primary language. We all get frustrated
 when working on hard problems, but we cannot allow that frustration to turn
 into personal attacks.
 
-## Speak up if you see or hear something.
+## Speak up if you see or hear something
 
 You are empowered to politely engage when you feel that you or others are
 disrespected. The person making you feel uncomfortable may not be aware of what
@@ -42,32 +42,34 @@ While all reports will be taken seriously, the Mixxx community managers may
 not act on complaints that they feel are not violations of this code of
 conduct.
 
-## We will not tolerate harassment of any kind, including but not limited to:
+## No Tolerance for Harassment
 
- * Harassing comments
- * Intimidation
- * Encouraging a person to engage in self-harm.
- * Sustained disruption or derailing of threads, channels, lists, etc.
- * Offensive or violent comments, jokes or otherwise
- * Inappropriate sexual content
- * Unwelcome sexual or otherwise aggressive attention
- * Continued one-on-one communication after requests to cease
- * Distribution or threat of distribution of people's personally identifying
-   information, AKA “doxing”
+We will not tolerate harassment of any kind, including but not limited to:
+
+* Harassing comments
+* Intimidation
+* Encouraging a person to engage in self-harm.
+* Sustained disruption or derailing of threads, channels, lists, etc.
+* Offensive or violent comments, jokes or otherwise
+* Inappropriate sexual content
+* Unwelcome sexual or otherwise aggressive attention
+* Continued one-on-one communication after requests to cease
+* Distribution or threat of distribution of people's personally identifying
+  information, AKA “doxing”
 
 ## Consequences for failing to comply with this policy
 
 Consequences for failing to comply with this policy may include, at the sole
 discretion of the Mixxx community managers:
 
- * a request for an apology;
- * a private or public warning or reprimand;
- * a temporary ban from the mailing list, blog, Mixxx repository or
-   organization, or other Mixxx-supported communication group, including
-   loss of committer status;
- * a permanent ban from any of the above, or from all current and future
-   Mixxx-supported communities, including loss of
-   committer status.
+* a request for an apology;
+* a private or public warning or reprimand;
+* a temporary ban from the mailing list, blog, Mixxx repository or
+  organization, or other Mixxx-supported communication group, including
+  loss of committer status;
+* a permanent ban from any of the above, or from all current and future
+  Mixxx-supported communities, including loss of
+  committer status.
 
 Participants warned to stop any harassing behavior are expected to comply
 immediately; failure to do so will result in an escalation of consequences.

README.md

@@ -1,4 +1,5 @@
 # Mixxx
+
 [![GitHub latest tag](https://img.shields.io/github/tag/mixxxdj/mixxx.svg)](https://mixxx.org/download)
 [![Packaging status](https://repology.org/badge/tiny-repos/mixxx.svg)](https://repology.org/metapackage/mixxx/versions)
 [![Zulip chat](https://img.shields.io/badge/zulip-join_chat-brightgreen.svg)](https://mixxx.zulipchat.com)

packaging/certificates/README.md

@@ -1,20 +1,15 @@
-
 # Key Rotation
 
-# downloads-hostgator.mixxx.org
+## downloads-hostgator.mixxx.org
 
 SSH access is granted via an RSA key stored in `build/certificates/downloads-hostgator.mixxx.org.key`.
 
 To rotate this key, generate a new RSA key with a strong password (e.g. 32 character randomly generated).
 
-```
-ssh-keygen -t rsa -b 4096 -f downloads-hostgator.mixxx.org.key
-```
+    ssh-keygen -t rsa -b 4096 -f downloads-hostgator.mixxx.org.key
 
 Copy the **public** key to `$HOME/.ssh/authorized_keys`, replacing the old file to remove access for the current key.
 
 Encrypt the password using `travis encrypt` and update `.travis.yml`.
 
-```
-travis encrypt DOWNLOADS_HOSTGATOR_DOT_MIXXX_DOT_ORG_KEY_PASSWORD=hunter2 -r mixxxdj/mixxx
-```
+    travis encrypt DOWNLOADS_HOSTGATOR_DOT_MIXXX_DOT_ORG_KEY_PASSWORD=hunter2 -r mixxxdj/mixxx

res/controllers/mixco/README.md

@@ -1,6 +1,4 @@
-
-Mixco Scripts
-=============
+# Mixco Scripts
 
 Some of the scripts in the parent folder are the compile output of
 **Mixco**, a tool that can generate the `.xml` and `.js` files from a
@@ -10,9 +8,8 @@ original sources for such scripts.
 If you modify these scripts, you need to use the `mixco` command to
 compile the `.xml` and `.js` files that Mixxx can read.  To install
 it, you need [NPM](https://www.npmjs.org/) and then:
-```sh
+
     $ npm install -g mixco
-```
 
 You can find more information on how to install and use this
 tool [in the official Mixco website](https://sinusoid.es/mixco/).