docs: update readme for 3.26 backport (#206)

Author: henryiii

README.md

@@ -91,12 +91,11 @@ project(${SKBUILD_PROJECT_NAME} LANGUAGES C VERSION ${SKBUILD_PROJECT_VERSION})
 find_package(Python COMPONENTS Interpreter Development.Module)
 
 Python_add_library(_module MODULE src/module.c WITH_SOABI)
-set(Python_SOABI ${SKBUILD_SOABI})  # Required for PyPy support
 
 install(TARGETS _module DESTINATION ${SKBUILD_PROJECT_NAME})
 ```
 
-Scikit-build-core will backport FindPython from CMake 3.24 to older versions of
+Scikit-build-core will backport FindPython from CMake 3.26 to older versions of
 Python, and will handle PyPy for you if you are building from PyPy. You will
 need to install everything you want into the full final path inside site-modules
 (so you will usually prefix everything by the package name).