docs: Fix dead links in docs (#3076)

.github/pull_request_template.md

@@ -1,4 +1,4 @@
-<!-- Important! Please follow the guidelines for naming Pull Requests: https://docs.dasch.swiss/latest/developers/dsp/contribution/ -->
+<!-- Important! Please follow the guidelines for naming Pull Requests: https://docs.dasch.swiss/latest/developers/contribution/ -->
 
 ## Pull Request Checklist
 

README.md

@@ -6,7 +6,7 @@
 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/4c8f6736facf4e3ab6b0436c0c1ff197)](https://www.codacy.com/gh/dasch-swiss/dsp-api/dashboard?utm_source=github.com&utm_medium=referral&utm_content=dasch-swiss/dsp-api&utm_campaign=Badge_Grade)
 [![Codacy Badge](https://app.codacy.com/project/badge/Coverage/4c8f6736facf4e3ab6b0436c0c1ff197)](https://www.codacy.com/gh/dasch-swiss/dsp-api/dashboard?utm_source=github.com&utm_medium=referral&utm_content=dasch-swiss/dsp-api&utm_campaign=Badge_Coverage)
 
-[DSP](https://admin.dasch.swiss/) is a server application for storing, sharing, and working with primary sources and data in the humanities.
+[DSP](https://app.dasch.swiss/) is a server application for storing, sharing, and working with primary sources and data in the humanities.
 
 It is developed by the [Swiss National Data and Service Center for the Humanities](https://dasch.swiss)
 at the [University of Basel](https://www.unibas.ch), and is supported by the

docs/architecture/workspace.dsl

@@ -11,7 +11,7 @@ workspace "Architecture Diagrams for DSP" "This is a collection of diagrams for
         enterprise "DSP - DaSCH Service Platform" {
             # softwareSystem <name> [description] [tags]
             dspJsLib        = softwaresystem "JS-LIB"               "Layer between DSP-API and DSP-APP"
-            dspApp          = softwaresystem "DSP-APP"              "admin.dasch.swiss"
+            dspApp          = softwaresystem "DSP-APP"              "app.dasch.swiss"
             dspTools        = softwaresystem "DSP-TOOLS"            "CLI for DSP-API"
             fuseki          = softwaresystem "Fuseki Triplestore"   "RDF database"                          "Database"
             sipi            = softwaresystem "SIPI"                 "IIIF image server"