feat(ISD-1667): updated snap guidelines to include snaps where the bi…

…nary is built from source

undid some automatic markdown formatting

CONTRIBUTING.md

@@ -1,31 +1,24 @@
 # Standards
 
-- [Standards](#standards)
-  - [Definitions](#definitions)
-    - [Tool](#tool)
-    - [Unit Tests](#unit-tests)
-    - [Integration Tests](#integration-tests)
-    - [End To End Tests](#end-to-end-tests)
-    - [Smoke Tests](#smoke-tests)
-  - [Programming Languages and Frameworks](#programming-languages-and-frameworks)
-  - [Charm Ubuntu and Python Version](#charm-ubuntu-and-python-version)
-  - [Downloading Binaries](#downloading-binaries)
-  - [CI-CD](#ci-cd)
-  - [Random Values](#random-values)
-  - [File Encoding](#file-encoding)
-  - [Repository Setup](#repository-setup)
-  - [PR comments and requests for changes](#pr-comments-and-requests-for-changes)
-  - [Failing Status Checks](#failing-status-checks)
-  - [Test Structure](#test-structure)
-  - [Test Exception Raised](#test-exception-raised)
-  - [Test Fixture](#test-fixture)
-  - [Test Coverage](#test-coverage)
-  - [Type Hints](#type-hints)
-  - [Handling Typing Issues with python-libjuju](#handling-typing-issues-with-python-libjuju)
-  - [Static Code Analysis](#static-code-analysis)
-  - [Source Code Documentation](#source-code-documentation)
-  - [Function and Method Ordering](#function-and-method-ordering)
-  - [Non Compliant Code](#non-compliant-code)
+- [Charm Ubuntu and Python Version](#charm-ubuntu-and-python-version)
+- [CI-CD](#ci-cd)
+- [Downloading Binaries](#downloading-binaries)
+- [Failing Status Checks](#failing-status-checks)
+- [File Encoding](#file-encoding)
+- [Function and Method Ordering](#function-and-method-Ordering)
+- [Handling Typing Issues with python-libjuju](#handling-typing-issues-with-python-libjuju)
+- [Non Compliant Code](#non-compliant-code)
+- [PR comments and requests for changes](#pr-comments-and-requests-for-changes)
+- [Programming Languages and Frameworks](#programming-languages-and-frameworks)
+- [Random values](#random-values)
+- [Repository Setup](#repository-setup)
+- [Static Code Analysis](#static-code-analysis)
+- [Source Code Documentation](#source-code-documentation)
+- [Test Coverage](#test-coverage)
+- [Test Exception Raised](#test-exception-raised)
+- [Test Fixture](#test-fixture)
+- [Test Structure](#test-structure)
+- [Type Hints](#type-hints)
 
 The [Charm development best practices](https://juju.is/docs/sdk/styleguide) are
 incorporated by reference.
@@ -136,7 +129,7 @@ These are:
 * The Ubuntu Archives (for debian packages)
 * Snaps
   [owned by the "canonical" account](https://snapcraft.io/publisher/canonical)
-* Snaps where the binary is built from source, and the source is trusted and approved for use
+* Snaps where the binary is built from source, and the source is trusted and approved for use.
 * [PyPi](https://pypi.org/)
 
 These sources are considered trusted because we are confident that we understand