Update documentation to include page title and slug

docs/development/environment-setup/ubuntu.md

@@ -1,4 +1,7 @@
-## Ubuntu
+---
+path: "/docs/installation-guide-ubuntu"
+title: "Ubuntu installation guide"
+---
 
 Open a terminal and run the following commands
 

docs/development/project-setup/dependencies.md

@@ -1,3 +1,8 @@
+---
+path: "/docs/dependencies"
+title: "Project Dependencies"
+---
+
 ### Install Ruby dependencies
 
 Use the following command to install ruby dependencies.

docs/development/project-setup/environment-variables.md

@@ -1,3 +1,8 @@
+---
+path: "/docs/environment-variables"
+title: "Environment Variables"
+---
+
 ### Setup environment variables
 
 Copy `database` and `application` variables to the correct location.

docs/development/project-setup/errors.md

@@ -1,3 +1,8 @@
+---
+path: "/docs/common-errors"
+title: "Common Errors"
+---
+
 ### Errors you might encounter while setting up the project
 
 #### ArgumentError: invalid uri scheme