Improve documentation.
(Patch by Arfrever. Backported from Progress Overlay.)
--- python.eclass
+++ python.eclass
@@ -955,12 +955,12 @@
 
 # @ECLASS-VARIABLE: PYTHON_RESTRICTED_ABIS
 # @DESCRIPTION:
-# Space-separated list of Python ABI patterns. Support for Python ABIs matching any Python ABI
+# Space-separated list of Python ABIs patterns. Support for Python ABIs matching any Python ABIs
 # patterns specified in this list is disabled.
 
 # @ECLASS-VARIABLE: PYTHON_TESTS_RESTRICTED_ABIS
 # @DESCRIPTION:
-# Space-separated list of Python ABI patterns. Testing in Python ABIs matching any Python ABI
+# Space-separated list of Python ABIs patterns. Testing with Python ABIs matching any Python ABIs
 # patterns specified in this list is skipped.
 
 # @ECLASS-VARIABLE: PYTHON_EXPORT_PHASE_FUNCTIONS