Update codeblocks from bash to sh for consistency

Use sh instead of bash in documentation code blocks for shell universality

Author: oscar-romero-jorge

CONTRIBUTING.md

@@ -11,22 +11,22 @@ Click the **"Fork"** button on the top right of this page to create a copy of th
 
 ### 2. Clone Your Fork Locally
 
-```bash
+```sh
 git clone https://github.com/YOUR-USERNAME/YOUR-FORK.git
 cd YOUR-FORK
 ```
 
 ### 3. Add the Original Repo as a Remote
 
-```bash
+```sh
 git remote add upstream https://github.com/OpenSourceFellows/map-dashboard.git
 ```
 
 ### 4. Create a New Branch for Your Work
 
     Never work directly on main or reuse old branches.
 
-```bash
+```sh
 git checkout main
 git pull upstream main
 git checkout -b feature/your-feature-name
@@ -36,14 +36,14 @@ git checkout -b feature/your-feature-name
 
 Make your changes locally, and commit them:
 
-```bash
+```sh
 git add .
 git commit -m "Add: brief description of your change"
 ```
 
 ### 6. Push the Branch to Your Fork
 
-```bash
+```sh
 git push origin feature/your-feature-name
 ```
 
@@ -59,7 +59,7 @@ git push origin feature/your-feature-name
 
 Before starting new work, always sync your fork:
 
-```bash
+```sh
 git checkout main
 git fetch upstream
 git merge upstream/main

docs/MAINTAINER.md

@@ -14,7 +14,7 @@ Based on existing branches in the repository:
 - `Issue-##` - Issue-specific work (e.g., `Issue-10`, `Issue-67`)
 
 **Creating a branch:**
-```bash
+```sh
 git checkout main
 git pull origin main
 git checkout -b <type>/<descriptive-name>
@@ -24,13 +24,13 @@ git checkout -b <type>/<descriptive-name>
 
 Push your branch:
 
-```bash
+```sh
 git push -u origin <your-branch-name>
 ```
 
 Create PR using [GitHub CLI](https://cli.github.com/) (requires installation):
 
-```bash
+```sh
 gh pr create --title "Your PR title" --fill
 ```
 
@@ -46,7 +46,7 @@ gh pr create --title "Your PR title" --fill
 
 If you want to test it locally, use [GitHub CLI](https://cli.github.com/):
 
-```bash
+```sh
 gh pr checkout <PR-number>
 ```