Update main/res/values-pt/strings.xml
Update main/res/values-pt/strings.xml

I am portuguese and I have found some errors in the translation to portuguese. I have corrected them.
lewurm/cgeo,S-Bartfast/cgeo,marco-dev/c-geo-opensource,Bananeweizen/cgeo,xiaoyanit/cgeo,schwabe/cgeo,schwabe/cgeo,xiaoyanit/cgeo,superspindel/cgeo,pstorch/cgeo,rsudev/c-geo-opensource,KublaikhanGeek/cgeo,SammysHP/cgeo,tobiasge/cgeo,marco-dev/c-geo-opensource,Huertix/cgeo,rsudev/c-geo-opensource,lewurm/cgeo,kumy/cgeo,lewurm/cgeo,Bananeweizen/cgeo,schwabe/cgeo,superspindel/cgeo,mucek4/cgeo,matej116/cgeo,madankb/cgeo,cgeo/cgeo,ThibaultR/cgeo,madankb/cgeo,S-Bartfast/cgeo,mucek4/cgeo,brok85/cgeo,matej116/cgeo,samueltardieu/cgeo,SammysHP/cgeo,xiaoyanit/cgeo,rsudev/c-geo-opensource,brok85/cgeo,tobiasge/cgeo,cgeo/cgeo,matej116/cgeo,yummy222/cgeo,schwabe/cgeo,S-Bartfast/cgeo,ThibaultR/cgeo,auricgoldfinger/cgeo,kumy/cgeo,auricgoldfinger/cgeo,KublaikhanGeek/cgeo,vishwakulkarni/cgeo,Bananeweizen/cgeo,samueltardieu/cgeo,yummy222/cgeo,kumy/cgeo,tobiasge/cgeo,SammysHP/cgeo,yummy222/cgeo,vishwakulkarni/cgeo,superspindel/cgeo,mucek4/cgeo,KublaikhanGeek/cgeo,cgeo/cgeo,Huertix/cgeo,samueltardieu/cgeo,ThibaultR/cgeo,brok85/cgeo,madankb/cgeo,pstorch/cgeo,pstorch/cgeo,Huertix/cgeo,cgeo/cgeo,auricgoldfinger/cgeo,marco-dev/c-geo-opensource,vishwakulkarni/cgeo