MC-20091: Update links to examples

Fixed slack links to link to #pagebuilder channel

Author: bdenham

docs/getting-started/install-pagebuilder-examples.md

@@ -22,11 +22,11 @@ The [Example directory](https://github.com/magento-devdocs/pagebuilder-examples/
 
 ## Additional extension modules
 
-- **[PageBuilderLazyLoading](https://github.com/magento-devdocs/pagebuilder-examples/tree/master/Example/PageBuilderLazyLoading)** — This module shows how to add lazy loading behavior to the Image content type. For this example, we use the [lazysizes](https://github.com/aFarkas/lazysizes) loader. Created by [Bruce Denham](https://magentocommeng.slack.com/messages/DA4LERA9L).
-- **[DeactivatingPageBuilder](https://github.com/magento-devdocs/pagebuilder-examples/tree/master/Example/DeactivatingPageBuilder)** — This example module shows you how to disable Page Builder for a particular page in Magento, specifically Pages, Blocks, and Dynamic Blocks. Created by [Bruce Denham](https://magentocommeng.slack.com/messages/DA4LERA9L).
-- **[PageBuilderExtensionBaseForms](https://github.com/magento-devdocs/pagebuilder-examples/tree/master/Example/PageBuilderExtensionBaseForms)** — This module shows you how to remove fields and fieldsets from Page Builder's built-in forms. Created by [Bruce Denham](https://magentocommeng.slack.com/messages/DA4LERA9L).
-- **[PageBuilderExtensionText](https://github.com/magento-devdocs/pagebuilder-examples/tree/master/Example/PageBuilderExtensionText)** — This module shows you how to customize the Page Builder's Text toolbar, integrate your own theme's typography, and add TinyMCE's `code` plugin to the toolbar so you can view the HTML code directly. Created by [Bruce Denham](https://magentocommeng.slack.com/messages/DA4LERA9L).
-- **[PageBuilderExtensionSlider](https://github.com/magento-devdocs/pagebuilder-examples/tree/master/Example/PageBuilderExtensionSlider)** — This module shows you how to add `centerMode` and `centerPadding` settings from the [slick carousel](https://kenwheeler.github.io/slick/) used by the Slider. Create by [Bruce Denham](https://magentocommeng.slack.com/messages/DA4LERA9L).
+- **[PageBuilderLazyLoading](https://github.com/magento-devdocs/pagebuilder-examples/tree/master/Example/PageBuilderLazyLoading)** — This module shows how to add lazy loading behavior to the Image content type. For this example, we use the [lazysizes](https://github.com/aFarkas/lazysizes) loader. Created by @bruce on [#pagebuilder](https://app.slack.com/client/T4YUW69CM/CHB455HPF).
+- **[DeactivatingPageBuilder](https://github.com/magento-devdocs/pagebuilder-examples/tree/master/Example/DeactivatingPageBuilder)** — This example module shows you how to disable Page Builder for a particular page in Magento, specifically Pages, Blocks, and Dynamic Blocks. Created by @bruce on [#pagebuilder](https://app.slack.com/client/T4YUW69CM/CHB455HPF).
+- **[PageBuilderExtensionBaseForms](https://github.com/magento-devdocs/pagebuilder-examples/tree/master/Example/PageBuilderExtensionBaseForms)** — This module shows you how to remove fields and fieldsets from Page Builder's built-in forms. Created by @bruce on [#pagebuilder](https://app.slack.com/client/T4YUW69CM/CHB455HPF).
+- **[PageBuilderExtensionText](https://github.com/magento-devdocs/pagebuilder-examples/tree/master/Example/PageBuilderExtensionText)** — This module shows you how to customize the Page Builder's Text toolbar, integrate your own theme's typography, and add TinyMCE's `code` plugin to the toolbar so you can view the HTML code directly. Created by @bruce on [#pagebuilder](https://app.slack.com/client/T4YUW69CM/CHB455HPF).
+- **[PageBuilderExtensionSlider](https://github.com/magento-devdocs/pagebuilder-examples/tree/master/Example/PageBuilderExtensionSlider)** — This module shows you how to add `centerMode` and `centerPadding` settings from the [slick carousel](https://kenwheeler.github.io/slick/) used by the Slider. Create by @bruce on [#pagebuilder](https://app.slack.com/client/T4YUW69CM/CHB455HPF).
 
 ## Example code for how-to topics