Merge pull request #2360 from conda-forge/beckermr-patch-1

fix: update `noarch: python` syntax to use more compatible form

Author: beckermr

docs/maintainer/knowledge_base.md

@@ -1483,8 +1483,6 @@ In order to qualify as a noarch python package, all of the following criteria mu
 All recipes employing `noarch: python` should use the `python_min` variable per the following example:
 
 ```yaml title="recipe/meta.yaml"
-{% set python_min = python_min|default("0.1a0") %}
-
 name: package
 source:
   # ...
@@ -1493,15 +1491,15 @@ build:
   # ...
 requirements:
   host:
-    - python {{ python_min }}.*
+    - python {{ python_min }}
     # ...
   run:
     - python >={{ python_min }}
     # ...
 
 test:
   requires:
-    - python ={{ python_min }}
+    - python {{ python_min }}
     # ...
 ```