Cannot correct a typo on page for Carl Nielsen's Symphony No. 4

[felixblumenfeld]

I appear not to have enough privileges to correct a typo under Name Aliases in General Information on page for Carl Nielsen's Symphony no. 4. This entry does not appear when I click on Edit page. "The Inexstinguishable" should read "The Inextinguishable".

[DBMiller]

The alias is from Wikidata, and can be edited there: https://www.wikidata.org/wiki/Q231226

[felixblumenfeld]

Thanks for your reply. I edited the alias using the link you gave, but the page for Symphony no. 4 has not been updated several hours later. Is there a delay? How can one know that the page to edit is the link you gave (Q231226)? Where is it indicated that name aliases must be modified from outside IMSLP?