print 10 characters in series

suppose
fileA

kanika123ABC 1222222222222222
raciat5678ty 1221123333331121
jessica78ulllo 2233243223333333

so output shud be print only first 10 characters in series and rest remain same
kanika123A 1222222222222222
raciat5678 1221123333331121
jessica78u 2233243223333333

awk '{ $1 = substr($1, 1, 10); print }' fileA