fix(azure-functions): Show correct installation snippet (#13754)

noticed that we showed the generic browser JS (CDN and NPM package)
installation instructions instead of the `@sentry/node` SDK for Azure.
This PR adds an `azure-functions` specific install snippet.

Author: Lms24

platform-includes/getting-started-install/javascript.azure-functions.mdx

@@ -0,0 +1,31 @@
+<OnboardingOption optionId="profiling" hideForThisOption>
+
+```bash {tabTitle:npm}
+npm install @sentry/node --save
+```
+
+```bash {tabTitle:yarn}
+yarn add @sentry/node
+```
+
+```bash {tabTitle:pnpm}
+pnpm add @sentry/node
+```
+
+</OnboardingOption>
+
+<OnboardingOption optionId="profiling">
+
+```bash {tabTitle:npm}
+npm install @sentry/node @sentry/profiling-node --save
+```
+
+```bash {tabTitle:yarn}
+yarn add @sentry/node @sentry/profiling-node
+```
+
+```bash {tabTitle:pnpm}
+pnpm add @sentry/node @sentry/profiling-node
+```
+
+</OnboardingOption>