you can try and go to
Home->Setup->Translation then click on a tab Search a translation key or string and search for your currency and overwrite it with the new correct valu
I did find it in my Doli
en_GB CurrencyINR Indian rupees
go to
Home->Setup->Translation and in there you will have 3 columns. In the first one choose your language (for me it is en_GB - English (United Kingdom)) in the middle, in column “key” put CurrencyINR and in the last column put the correct value for your currency and check if that solves the issue