chore(common): fix slugs (#2750)

* chore(common): fix slugs

* chore(common): fix more slugs

* Update knowledge-base/pdfviewer-upload-controls-visibility.md

* Update knowledge-base/pdfviewer-upload-controls-visibility.md

---------

Co-authored-by: Dimo Dimov <961014+dimodi@users.noreply.github.com>

Author: ntacheva

components/dockmanager/overview.md

@@ -200,5 +200,5 @@ Use the component reference to execute methods and [get or set the DockManager s
 
 ## See Also
 
-* [DockManager API](slug://Telerik.Blazor.Components.TelerikDockManager-1)
+* [DockManager API](slug://Telerik.Blazor.Components.TelerikDockManager)
 * [Live Demo: DockManager](https://demos.telerik.com/blazor-ui/dockmanager/overview)

components/dockmanager/state.md

@@ -218,5 +218,5 @@ The example below shows how to restore the previous state of the DockManager on
 ## See Also
 
 * [Live Demo: DockManager State](https://demos.telerik.com/blazor-ui/dockmanager/persist-state)
-* [DockManagerState API reference](slug://Telerik.Blazor.Components.DockManagerState-1)
+* [DockManagerState API reference](slug://Telerik.Blazor.Components.TelerikDockManager)
 * [Blazor DockManager](slug://dockmanager-overview)

knowledge-base/pdfviewer-upload-controls-visibility.md

@@ -64,5 +64,5 @@ To control the visibility of Upload component and its dropzone in the `TelerikPd
 
 ## See Also
 
-- [TelerikPdfViewer Overview](slug://components/pdfviewer/overview)
-- [TelerikPdfViewer Events](slug://components/pdfviewer/events)
+- [TelerikPdfViewer Overview](slug://pdfviewer-overview)
+- [TelerikPdfViewer Events](slug://pdfviewer-events)