fix macros appearing in doxygen documentation
fix macros appearing in doxygen documentation

See
https://www.dealii.org/developer/doxygen/deal.II/classFunctionParser.html#a39c99186f03fa9c4ab7288f166a6ac5a
for an example

pesser/dealii,ESeNonFossiIo/dealii,kalj/dealii,jperryhouts/dealii,JaeryunYim/dealii,nicolacavallini/dealii,EGP-CIG-REU/dealii,EGP-CIG-REU/dealii,naliboff/dealii,nicolacavallini/dealii,JaeryunYim/dealii,naliboff/dealii,EGP-CIG-REU/dealii,angelrca/dealii,JaeryunYim/dealii,ESeNonFossiIo/dealii,andreamola/dealii,danshapero/dealii,sairajat/dealii,shakirbsm/dealii,JaeryunYim/dealii,spco/dealii,danshapero/dealii,pesser/dealii,angelrca/dealii,maieneuro/dealii,andreamola/dealii,pesser/dealii,maieneuro/dealii,spco/dealii,ESeNonFossiIo/dealii,sairajat/dealii,nicolacavallini/dealii,angelrca/dealii,andreamola/dealii,gpitton/dealii,danshapero/dealii,EGP-CIG-REU/dealii,JaeryunYim/dealii,gpitton/dealii,ESeNonFossiIo/dealii,EGP-CIG-REU/dealii,gpitton/dealii,gpitton/dealii,naliboff/dealii,kalj/dealii,ESeNonFossiIo/dealii,maieneuro/dealii,nicolacavallini/dealii,jperryhouts/dealii,jperryhouts/dealii,shakirbsm/dealii,kalj/dealii,naliboff/dealii,gpitton/dealii,kalj/dealii,gpitton/dealii,maieneuro/dealii,kalj/dealii,nicolacavallini/dealii,sairajat/dealii,danshapero/dealii,naliboff/dealii,andreamola/dealii,pesser/dealii,jperryhouts/dealii,naliboff/dealii,jperryhouts/dealii,shakirbsm/dealii,pesser/dealii,kalj/dealii,spco/dealii,spco/dealii,shakirbsm/dealii,shakirbsm/dealii,nicolacavallini/dealii,naliboff/dealii,maieneuro/dealii,jperryhouts/dealii,nicolacavallini/dealii,spco/dealii,kalj/dealii,andreamola/dealii,jperryhouts/dealii,gpitton/dealii,EGP-CIG-REU/dealii,angelrca/dealii,JaeryunYim/dealii,angelrca/dealii,danshapero/dealii,ESeNonFossiIo/dealii,pesser/dealii,sairajat/dealii,shakirbsm/dealii,andreamola/dealii,angelrca/dealii,JaeryunYim/dealii,ESeNonFossiIo/dealii,EGP-CIG-REU/dealii,danshapero/dealii,danshapero/dealii,spco/dealii,sairajat/dealii,sairajat/dealii,andreamola/dealii,angelrca/dealii,shakirbsm/dealii,spco/dealii,maieneuro/dealii,sairajat/dealii,pesser/dealii,maieneuro/dealii