update README [skip ci]

README.md

@@ -54,7 +54,7 @@ Download native binaries of Cryptomator on [cryptomator.org](https://cryptomator
 - File names get encrypted
 - Folder structure gets obfuscated
 - Use as many vaults in your Dropbox as you want, each having individual passwords
-- Four thousand commits for the security of your data!! :tada:
+- More than Five thousand commits for the security of your data!! :tada:
 
 ### Privacy