rm comma before 'that'

hugo/content/installation/building/unix/third-party.md

...ent/installation/install/windows/python-anaconda/index.md

...n/install/windows/python-original/python-pycharm/index.md

.../py/fitting/extended/polarized-spinasymmetry-fit/index.md

...ntent/py/fitting/extended/reflectometry-pt-layer/index.md

...content/py/result/export/axes-in-different-units/index.md

hugo/content/ref/instr/det/offspec.md

hugo/content/ref/instr/det/rectangular-detector/index.md

.../content/ref/instr/polarized/polarized-spin-flip/index.md

...ontent/ref/sample/interference/grating/lattice1d/index.md

hugo/content/ref/sample/interference/lattice2d/_index.md

hugo/content/ref/sample/interference/para2d/index.md

hugo/content/ref/sample/roughness/specular/index.md

hugo/content/ref/sim/setup/options/mc/index.md