drivers/include/periph/spi: Typo fix
drivers/include/periph/spi: Typo fix

Fix typo in inline doc.
beurdouche/RIOT,kerneltask/RIOT,immesys/RiSyn,biboc/RIOT,miri64/RIOT,basilfx/RIOT,beurdouche/RIOT,Ell-i/RIOT,smlng/RIOT,biboc/RIOT,yogo1212/RIOT,dailab/RIOT,kerneltask/RIOT,kerneltask/RIOT,TobiasFredersdorf/RIOT,kYc0o/RIOT,ks156/RIOT,ant9000/RIOT,neumodisch/RIOT,Josar/RIOT,aeneby/RIOT,kbumsik/RIOT,jbeyerstedt/RIOT-OTA-update,adjih/RIOT,aeneby/RIOT,RIOT-OS/RIOT,miri64/RIOT,josephnoir/RIOT,kYc0o/RIOT,cladmi/RIOT,toonst/RIOT,kbumsik/RIOT,dailab/RIOT,thomaseichinger/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,kbumsik/RIOT,avmelnikoff/RIOT,Josar/RIOT,josephnoir/RIOT,BytesGalore/RIOT,OlegHahm/RIOT,plushvoxel/RIOT,kYc0o/RIOT,authmillenon/RIOT,Hyungsin/RIOT-OS,jasonatran/RIOT,gebart/RIOT,OlegHahm/RIOT,hamilton-mote/RIOT-OS,neiljay/RIOT,TobiasFredersdorf/RIOT,kerneltask/RIOT,x3ro/RIOT,aeneby/RIOT,x3ro/RIOT,OTAkeys/RIOT,hamilton-mote/RIOT-OS,gautric/RIOT,RIOT-OS/RIOT,smlng/RIOT,OlegHahm/RIOT,kaspar030/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,OlegHahm/RIOT,beurdouche/RIOT,ant9000/RIOT,basilfx/RIOT,A-Paul/RIOT,syin2/RIOT,authmillenon/RIOT,immesys/RiSyn,BytesGalore/RIOT,avmelnikoff/RIOT,jfischer-phytec-iot/RIOT,rfuentess/RIOT,gautric/RIOT,gautric/RIOT,BytesGalore/RIOT,syin2/RIOT,gautric/RIOT,RIOT-OS/RIOT,biboc/RIOT,TobiasFredersdorf/RIOT,mtausig/RIOT,gebart/RIOT,neiljay/RIOT,kaleb-himes/RIOT,roberthartung/RIOT,jfischer-phytec-iot/RIOT,gebart/RIOT,ant9000/RIOT,aeneby/RIOT,thomaseichinger/RIOT,adrianghc/RIOT,miri64/RIOT,TobiasFredersdorf/RIOT,mfrey/RIOT,mtausig/RIOT,OTAkeys/RIOT,toonst/RIOT,kYc0o/RIOT,plushvoxel/RIOT,OTAkeys/RIOT,LudwigOrtmann/RIOT,ant9000/RIOT,josephnoir/RIOT,immesys/RiSyn,Ell-i/RIOT,gebart/RIOT,rfuentess/RIOT,adjih/RIOT,jbeyerstedt/RIOT-OTA-update,lazytech-org/RIOT,mfrey/RIOT,basilfx/RIOT,neumodisch/RIOT,roberthartung/RIOT,kaleb-himes/RIOT,dkm/RIOT,ks156/RIOT,Hyungsin/RIOT-OS,yogo1212/RIOT,gautric/RIOT,authmillenon/RIOT,toonst/RIOT,OTAkeys/RIOT,avmelnikoff/RIOT,thomaseichinger/RIOT,lazytech-org/RIOT,smlng/RIOT,mfrey/RIOT,A-Paul/RIOT,Hyungsin/RIOT-OS,kYc0o/RIOT,mtausig/RIOT,dailab/RIOT,lazytech-org/RIOT,OlegHahm/RIOT,miri64/RIOT,dailab/RIOT,jasonatran/RIOT,jasonatran/RIOT,LudwigKnuepfer/RIOT,x3ro/RIOT,syin2/RIOT,jfischer-phytec-iot/RIOT,kbumsik/RIOT,yogo1212/RIOT,LudwigOrtmann/RIOT,beurdouche/RIOT,plushvoxel/RIOT,neumodisch/RIOT,jbeyerstedt/RIOT-OTA-update,basilfx/RIOT,adrianghc/RIOT,LudwigKnuepfer/RIOT,kaspar030/RIOT,OTAkeys/RIOT,rfuentess/RIOT,neumodisch/RIOT,Ell-i/RIOT,smlng/RIOT,toonst/RIOT,cladmi/RIOT,roberthartung/RIOT,lazytech-org/RIOT,plushvoxel/RIOT,gebart/RIOT,Ell-i/RIOT,authmillenon/RIOT,dkm/RIOT,hamilton-mote/RIOT-OS,avmelnikoff/RIOT,neiljay/RIOT,A-Paul/RIOT,hamilton-mote/RIOT-OS,mfrey/RIOT,authmillenon/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,adjih/RIOT,jbeyerstedt/RIOT-OTA-update,LudwigKnuepfer/RIOT,LudwigKnuepfer/RIOT,adjih/RIOT,adrianghc/RIOT,hamilton-mote/RIOT-OS,thomaseichinger/RIOT,LudwigKnuepfer/RIOT,smlng/RIOT,Josar/RIOT,josephnoir/RIOT,A-Paul/RIOT,Josar/RIOT,syin2/RIOT,Ell-i/RIOT,BytesGalore/RIOT,thomaseichinger/RIOT,ks156/RIOT,roberthartung/RIOT,immesys/RiSyn,neiljay/RIOT,rfuentess/RIOT,kaspar030/RIOT,yogo1212/RIOT,Josar/RIOT,mtausig/RIOT,plushvoxel/RIOT,immesys/RiSyn,dkm/RIOT,Hyungsin/RIOT-OS,RIOT-OS/RIOT,avmelnikoff/RIOT,ks156/RIOT,toonst/RIOT,kaspar030/RIOT,kaleb-himes/RIOT,TobiasFredersdorf/RIOT,kerneltask/RIOT,LudwigOrtmann/RIOT,jfischer-phytec-iot/RIOT,LudwigOrtmann/RIOT,ant9000/RIOT,biboc/RIOT,BytesGalore/RIOT,neiljay/RIOT,miri64/RIOT,yogo1212/RIOT,yogo1212/RIOT,lazytech-org/RIOT,LudwigOrtmann/RIOT,syin2/RIOT,basilfx/RIOT,rfuentess/RIOT,RIOT-OS/RIOT,x3ro/RIOT,mtausig/RIOT,mfrey/RIOT,ks156/RIOT,adjih/RIOT,adrianghc/RIOT,josephnoir/RIOT,jfischer-phytec-iot/RIOT,authmillenon/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,adrianghc/RIOT,aeneby/RIOT,kaspar030/RIOT,dkm/RIOT,Hyungsin/RIOT-OS,kaleb-himes/RIOT,biboc/RIOT,cladmi/RIOT,cladmi/RIOT,LudwigOrtmann/RIOT,roberthartung/RIOT,immesys/RiSyn,dkm/RIOT,dailab/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,neumodisch/RIOT,jasonatran/RIOT,x3ro/RIOT,kaleb-himes/RIOT,A-Paul/RIOT,kbumsik/RIOT,neumodisch/RIOT,cladmi/RIOT,jasonatran/RIOT,jbeyerstedt/RIOT-OTA-update,beurdouche/RIOT