Update installation content (#6536)

* Update local-installation@oYeux7PbveYaVwXRzAg5x.md

* Update src/data/roadmaps/nodejs/content/local-installation@oYeux7PbveYaVwXRzAg5x.md

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Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

src/data/roadmaps/nodejs/content/local-installation@oYeux7PbveYaVwXRzAg5x.md

@@ -1 +1,8 @@
 # Local Installation
+
+Locally installed packages are available only to the project where the packages are installed, while the globally installed packages can be used any where without installing them into a project. Another usecase of the global packages is when using CLI tools.
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+Visit the following resources to learn more:
+
+- [@official@Downloading and installing packages locally](https://docs.npmjs.com/downloading-and-installing-packages-locally)
+- [@official@Downloading and installing packages globally](https://docs.npmjs.com/downloading-and-installing-packages-globally)