PEP 751: fix section order (#4259)

Author: brettcannon

peps/pep-0751.rst

@@ -177,17 +177,6 @@ consistent order. Usage of inline tables SHOULD also be kept consistent.
   (i.e. the minimum viable Python version for the lock file).
 
 
-``[[packages]]``
-================
-
-- **Type**: array of tables
-- **Required?**: yes
-- **Inspiration**: PDM_, Poetry_, uv_
-- An array containing all packages that *may* be installed.
-- Packages MAY be listed multiple times with varying data, but all packages to
-  be installed MUST narrow down to a single entry at install time.
-
-
 ``created-by``
 ==============
 
@@ -201,6 +190,17 @@ consistent order. Usage of inline tables SHOULD also be kept consistent.
   Python package to facilitate finding the tool.
 
 
+``[[packages]]``
+================
+
+- **Type**: array of tables
+- **Required?**: yes
+- **Inspiration**: PDM_, Poetry_, uv_
+- An array containing all packages that *may* be installed.
+- Packages MAY be listed multiple times with varying data, but all packages to
+  be installed MUST narrow down to a single entry at install time.
+
+
 .. Identification
 
 ``packages.name``