avoid being circular by adding a definition

Author: tshepang

src/changelog.rst

@@ -112,7 +112,11 @@ Language changes in Rust 1.89.0
 
 - `Extend temporary lifetime extension to also go through tuple struct and tuple variant constructors <https://github.com/rust-lang/rust/pull/140593>`_
 
-  - New paragraph: :p:`fls_eeaJtK4w5gVK`
+  - New paragraphs:
+
+    - :p:`fls_YeeZWqTdMivX`
+    - :p:`fls_wyzau8hhq74d`
+    - :p:`fls_eeaJtK4w5gVK`
 
 - `extern "C" functions on the wasm32-unknown-unknown target now have a standards compliant ABI <https://blog.rust-lang.org/2025/04/04/c-abi-changes-for-wasm32-unknown-unknown/>`_
 

src/ownership-and-deconstruction.rst

@@ -610,8 +610,12 @@ If the :t:`pattern-without-alternation` of a :t:`let statement` is an
 the :t:`let statement` is extended to the :t:`drop scope` of the
 :t:`block expression` that contains the :t:`let statement`.
 
+:dp:`fls_YeeZWqTdMivX`
+An :dt:`extending expression` is an :t:`expression` with an
+:t:`extended drop scope <drop scope extension>`.
+
 :dp:`fls_wyzau8hhq74d`
-An :dt:`extending expression` is any of the following:
+An :t:`extending expression` is any of the following:
 
 * :dp:`fls_ju7cpftd8r2g`
   The :t:`expression` of a :t:`let statement`.