Rollup merge of rust-lang#109839 - sartak:iter-grammar, r=scottmcm

Improve grammar of Iterator.partition_in_place

This is my first PR against Rust, please let me know if there's anything I should be providing here! I didn't find any instructions specific to documentation grammar in the [std-dev guide](https://std-dev-guide.rust-lang.org/documentation/summary.html).

Author: Noratrieb

library/core/src/iter/traits/iterator.rs

@@ -2120,8 +2120,8 @@ pub trait Iterator {
     ///
     /// # Current implementation
     ///
-    /// Current algorithms tries finding the first element for which the predicate evaluates
-    /// to false, and the last element for which it evaluates to true and repeatedly swaps them.
+    /// The current algorithm tries to find the first element for which the predicate evaluates
+    /// to false and the last element for which it evaluates to true, and repeatedly swaps them.
     ///
     /// Time complexity: *O*(*n*)
     ///