Chatte, don't be so bothered... These corrections doesn't prove that Kishimoto doesn't care about her... Man, you have no idea how much corrections he improves on volumes editions from jump release... xD He make a lot of corrections, on draws and speechs in volumes edition.
It's pretty possible (I'm certain so either) that Sakura had the same seal of Mito and Tsunade... She's in good company.
There two hypothesis:
1)At the first, Kishimoto had a different technique name for her (White strength) and then changed his mind.
2)Imho, more probable, the editor who deals digitally to insert the letters on pages with PS, have just confused the kanji "white" with "100".