Merge pull request #2919 from shengsheng/fix_doc

fix duplicate "`" in FromRow "default" attribute doc comment

sqlx-core/src/from_row.rs

@@ -91,7 +91,7 @@ use crate::{error::Error, row::Row};
 /// will set the value of the field `location` to the default value of `Option<String>`,
 /// which is `None`.
 ///
-/// Moreover, if the struct has an implementation for [`Default`], you can use the `default``
+/// Moreover, if the struct has an implementation for [`Default`], you can use the `default`
 /// attribute at the struct level rather than for each single field. If a field does not appear in the result,
 /// its value is taken from the `Default` implementation for the struct.
 /// For example: