Rollup merge of #64509 - varkor:convert-identity-doc-fixes, r=Centril
Make some adjustments to the documentation for `std::convert::identity`
Fixes some extra blank lines and makes some minor tweaks to the wording.
diff --git a/src/libcore/convert.rs b/src/libcore/convert.rs
index 402a7b2..06f2b7b 100644
--- a/src/libcore/convert.rs
+++ b/src/libcore/convert.rs
@@ -42,11 +42,11 @@
use crate::fmt;
-/// An identity function.
+/// The identity function.
///
/// Two things are important to note about this function:
///
-/// - It is not always equivalent to a closure like `|x| x` since the
+/// - It is not always equivalent to a closure like `|x| x`, since the
/// closure may coerce `x` into a different type.
///
/// - It moves the input `x` passed to the function.
@@ -56,31 +56,32 @@
///
/// # Examples
///
-/// Using `identity` to do nothing among other interesting functions:
+/// Using `identity` to do nothing in a sequence of other, interesting,
+/// functions:
///
/// ```rust
/// use std::convert::identity;
///
/// fn manipulation(x: u32) -> u32 {
-/// // Let's assume that this function does something interesting.
+/// // Let's pretend that adding one is an interesting function.
/// x + 1
/// }
///
/// let _arr = &[identity, manipulation];
/// ```
///
-/// Using `identity` to get a function that changes nothing in a conditional:
+/// Using `identity` as a "do nothing" base case in a conditional:
///
/// ```rust
/// use std::convert::identity;
///
/// # let condition = true;
-///
+/// #
/// # fn manipulation(x: u32) -> u32 { x + 1 }
-///
+/// #
/// let do_stuff = if condition { manipulation } else { identity };
///
-/// // do more interesting stuff..
+/// // Do more interesting stuff...
///
/// let _results = do_stuff(42);
/// ```
