DOC: Add more examples to the `issubdtype` docstring
DOC: Add more examples to the `issubdtype` docstring

pdebuyl/numpy,mhvk/numpy,grlee77/numpy,pbrod/numpy,simongibbons/numpy,rgommers/numpy,seberg/numpy,numpy/numpy,pdebuyl/numpy,grlee77/numpy,mhvk/numpy,pdebuyl/numpy,charris/numpy,charris/numpy,anntzer/numpy,grlee77/numpy,pdebuyl/numpy,mattip/numpy,grlee77/numpy,mattip/numpy,anntzer/numpy,simongibbons/numpy,mhvk/numpy,endolith/numpy,mhvk/numpy,pbrod/numpy,endolith/numpy,numpy/numpy,mattip/numpy,mhvk/numpy,rgommers/numpy,seberg/numpy,pbrod/numpy,madphysicist/numpy,simongibbons/numpy,endolith/numpy,numpy/numpy,mattip/numpy,anntzer/numpy,grlee77/numpy,seberg/numpy,simongibbons/numpy,simongibbons/numpy,madphysicist/numpy,jakirkham/numpy,seberg/numpy,rgommers/numpy,jakirkham/numpy,madphysicist/numpy,pbrod/numpy,endolith/numpy,jakirkham/numpy,numpy/numpy,madphysicist/numpy,pbrod/numpy,madphysicist/numpy,charris/numpy,charris/numpy,rgommers/numpy,jakirkham/numpy,jakirkham/numpy,anntzer/numpy