diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index 0dc4a7d2d..3e75a0acc 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -2,7 +2,7 @@
 
 ## Scope and goals
 
-- This repository serves as the source for building GitHub Actions runner and Azure DevOps agent images for Windows, Ubuntu, and macOS. You can find exact versions in the [README.md](../README.md#available-images) available images section. Windows and Ubuntu images build on Azure infrastructure using Packer; macOS images use Anka virtualization.
+- This repository serves as the source for building GitHub Actions runner and Azure DevOps agent images for Windows, Ubuntu, and macOS. You can find exact versions in the [Available Images](../README.md#available-images) section of README.md. Windows and Ubuntu images build on Azure infrastructure using Packer; macOS images use Anka virtualization.
 - Emphasize best practices for contributing to open-source projects, including code style, commit messages, and pull request etiquette.
 - Prefer clarity and correctness over creativity. If information is missing, ask clarifying questions or insert TODOs instead of guessing.
 
@@ -10,7 +10,7 @@
 
 - Follow the code style guide in [CONTRIBUTING.md](../CONTRIBUTING.md#code-style-guide) for Bash and PowerShell scripts, including naming conventions, file structure, and indentation rules.
 - Focus on re-using helpers when writing scripts. Windows, Linux and Ubuntu scripts have helper functions available to simplify installation and validation.
-- Always confirm versions and installations paths against existing toolset files and installation scripts.
+- Always confirm versions and installation paths against existing toolset files and installation scripts.
 
 ## Output format
 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3f9ed145e..0484bb27e 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -105,7 +105,7 @@ Each script should start with the following shebang:
 
 This will make the script exit if any command fails.
 
-After the shebang, add a header with of the following format:
+After the shebang, add a header with the following format:
 
 ```bash
 ################################################################################
@@ -124,7 +124,7 @@ source $HELPER_SCRIPTS/install.sh
 source $HELPER_SCRIPTS/etc-environment.sh
 ```
 
-For mac OS:
+For macOS:
 
 ```bash
 source ~/utils/utils.sh
@@ -153,15 +153,15 @@ After that, add the script code.
   - `curl -sSLf`
   - `wget -qO-`
 
-### Powershell scripts
+### PowerShell scripts
 
-#### Naming convention for Powershell scripts
+#### Naming convention for PowerShell scripts
 
 - Use camelCase for variable names.
 - Use uppercase letters for constants.
 - Use `Verb-Noun` and PascalCase for function names.
 
-### Powershell script structure
+### PowerShell script structure
 
 Each script should start with the following header:
 
@@ -201,7 +201,7 @@ Import-Module "$env:HOME/image-generation/helpers/Xcode.Helpers.psm1" -DisableNa
 
 After that, add the script code.
 
-### Indentations and line breaks in Powershell scripts
+### Indentations and line breaks in PowerShell scripts
 
 - Use 4 spaces for indentation.
 - Use 1 space between `if`/`elseif`/`foreach` and `(` but not between `(` and the condition.