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.

Author: bors

src/doc/src/reference/timings.md

@@ -6,7 +6,7 @@ takes, and tracks concurrency information over time.
 cargo build --timings
 ```
 
-This writes an HTML report in `target/cargo-timings/cargo-timings.html`. This
+This writes an HTML report in `target/cargo-timings/cargo-timing.html`. This
 also writes a copy of the report to the same directory with a timestamp in the
 filename, if you want to look at older runs.