[web] Fixed some links.

Documentation/bibliography/other.bib

@@ -110,7 +110,7 @@ author = {J. Buchwald and S. Kaiser and O. Kolditz and T. Nagel}
   Number                   = 8,
   Pages                    = 2849,
   Note                     = {{revision #91199}},
-  Url                      = {http://www.scholarpedia.org/article/Differential-algebraic_equations}
+  Url                      = {https://web.archive.org/web/20240423230323/http://www.scholarpedia.org/article/Differential-algebraic_equations}
 }
 
 @Book{Heusermann1983,

NumLib/ODESolver/ODESolver.dox

@@ -16,7 +16,7 @@ and backward Euler and Crank-Nicolson methods and Backward Differentiation
 Formulas. The design follows Gear's method, which also underlies the DASSL
 algorithm of Petzold et al., cf. Differential-algebraic equations article,
 section [Numerical methods/Direct discretization]
-(http://www.scholarpedia.org/article/Differential-algebraic_equations#Numerical_methods.2FDirect_discretization)
+(https://web.archive.org/web/20240423230323/http://www.scholarpedia.org/article/Differential-algebraic_equations#Numerical_methods.2FDirect_discretization)
 \cite Campbell:2008.
 
 A rough overview over the interplay between the various parts of this library is

web/content/imprint.md

@@ -28,7 +28,7 @@ The source code of this website is available at <https://gitlab.opengeosys.org/o
 This website uses a number of external projects:
 
 - [Hugo](https://gohugo.io/) static website generator.
-- [jQuery](https://jquery.org/) JavaScript library, distributed under the [jQuery License](https://jquery.org/license/).
+- [jQuery](https://jquery.com/) JavaScript library, distributed under the [jQuery License](https://jquery.com/license/).
 - [TailwindCSS](https://tailwindcss.com) framework, distributed under the [MIT License](https://github.com/tailwindcss/tailwindcss/blob/master/LICENSE).
 - [Font Awesome](https://fontawesome.com), distributed under [this license](https://github.com/FortAwesome/Font-Awesome/blob/master/LICENSE.txt).
 - [Roboto font](https://fonts.google.com/specimen/Roboto) and [Open Sans font](https://fonts.google.com/specimen/Open+Sans), both distributed under the [Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0).

web/data/bib_other.yaml

@@ -77,7 +77,7 @@ entries:
     number: "8"
     pages: "2849"
     note: "{revision #91199}"
-    url: http://www.scholarpedia.org/article/Differential-algebraic_equations
+    url: https://web.archive.org/web/20240423230323/http://www.scholarpedia.org/article/Differential-algebraic_equations
     author:
       - first: S.
         middle: L.