Auto merge of #10879 - dcaba:master, r=epage
Auto merge of #10879 - dcaba:master, r=epage

docs: fixing minor error in the default timing report filename

### What does this PR try to resolve?

Minor documentation fix, as I accidentally realized that the timings build report filename is not plural.

rust-lang/cargo,rustyhorde/cargo,rust-lang/cargo,rustyhorde/cargo,eminence/cargo,nipunn1313/cargo,nipunn1313/cargo,eminence/cargo,eminence/cargo,rustyhorde/cargo,eminence/cargo,nipunn1313/cargo,rust-lang/cargo,rust-lang/cargo,nipunn1313/cargo,rustyhorde/cargo