Fix: Use internal links; fix admonition

doc.zih.tu-dresden.de/docs/application/acknowledgement.md

@@ -7,21 +7,21 @@ magazines, journals, and conference proceedings. We kindly ask you to mention th
 in the acknowledgment section of all publications that are based on granted HPC resources of the
 [NHR center at TU Dresden](https://tu-dresden.de/zih/hochleistungsrechnen/nhr-center). Examples:
 
-!!! example (standard case)
+!!! note "Standard case"
 
     The authors gratefully acknowledge the computing time made available to them on
     the high-performance computer <XY> at the NHR Center of TU Dresden. This center is jointly
     supported by the Federal Ministry of Education and Research and the state governments
     participating in the NHR (www.nhr-verein.de/unsere-partner).
 
-!!! example (two NHR centers)
+!!! note "Two NHR centers"
 
     The authors gratefully acknowledge the computing time made available to them on
     the high-performance computers <XY> and <YZ> at the NHR Centers at TU Dresden and <YZ>.
     These centers are jointly supported by the Federal Ministry of Education and Research
     and the state governments participating in the NHR (www.nhr-verein.de/unsere-partner).
 
-!!! example (German)
+!!! note "German"
 
     Die Autoren bedanken sich für die ihnen zur Verfügung gestellte Rechenzeit auf
     dem Hochleistungsrechner <XY> am NHR-Zentrum der TU Dresden. Dieses wird gemeinsam durch

doc.zih.tu-dresden.de/docs/index.md

@@ -8,7 +8,7 @@ to incorporate more information with increasing experience and with every questi
 
 If the provided HPC systems and services helped to advance your research, please cite us. Why this
 is important and acknowledgment examples can be found in the section
-[Acknowledgement](https://doc.zih.tu-dresden.de/application/acknowledgement/).
+[Acknowledgement](application/acknowledgement.md).
 
 ## Contribution