Add issue templated for docs and update existing issue templates (#5676)

* Add issue template for documentation

* Add missing space to the "Icon request" template's description

* Update issue template descriptios

.github/ISSUE_TEMPLATE/documentation.md

@@ -0,0 +1,23 @@
+---
+name: Documentation
+about: Report problems and suggest ideas for the documentation
+labels: docs
+---
+
+<!-- Before opening a new issue search for duplicate or closed issues -->
+
+
+### Kind of issue <!-- Change the one that applies to `[x]`  -->
+  - [ ] Improvement
+  - [ ] Mistake
+  - [ ] Other, namely:
+
+### Description
+
+
+<!--
+Anything relevant, for example:
+  - A (perma)link to the documentation
+  - For improvements: Suggested for how to improve
+  - For mistakes: Suggested fixes
+-->

.github/ISSUE_TEMPLATE/icon_request.md

@@ -1,6 +1,6 @@
 ---
 name: Icon request
-about: Request a new icon for SimpleIcons
+about: Request a new icon for Simple Icons
 labels: new icon
 ---
 
@@ -23,7 +23,7 @@ labels: new icon
 
 **Official resources for icon and color:**
   <!-- for example media kits, brand guidelines, SVG files, etc. -->
-  
+
 <!-- For more details on our processes please see our contributing
      guidelines, which can be found at
      https://github.com/simple-icons/simple-icons/blob/develop/CONTRIBUTING.md -->

.github/ISSUE_TEMPLATE/package.md

@@ -1,6 +1,6 @@
 ---
 name: Packages
-about: Issues and improvements for the packages
+about: Report problems and suggest ideas for the packages
 labels: package
 ---