update readme file

README.md

@@ -8,7 +8,8 @@ For an overview about the CurvedGrid and the CurvedGeometry, see also the presen
 
 ## Installation Instructions
 `dune-curvedgrid` requires the DUNE core modules, version 2.7 or later.
-Please see the [general instructions for building DUNE modules](https://www.dune-project.org/doc/installation) for detailed instructions on how to build the module.
+Please see the [general instructions for building DUNE modules](https://www.dune-project.org/doc/installation)
+for detailed instructions on how to build the module.
 
 ## Initial Example
 (See [example1.cc](https://gitlab.mn.tu-dresden.de/iwr/dune-curvedgrid/-/blob/master/src/example1.cc))
@@ -89,4 +90,4 @@ Functions::interpolate(f.basis(), f.coefficients(), sphere);
 
 // Wrap the reference grid and the grid-function
 CurvedGrid grid{*refGrid, f};
-```
\ No newline at end of file
+```