PEP 810: Fix typos (#4657)

Author: sobolevn

peps/pep-0810.rst

@@ -374,7 +374,7 @@ When an import is lazy, ``__lazy_import__`` is called instead of
 ``__import__``. It adds the module name to ``sys.lazy_modules``, a set of
 fully-qualified module names which have been lazily imported at some point
 (primarily for diagnostics and introspection), and returns a
-:class:`!types.LazyImportType`` object for the module.
+:class:`!types.LazyImportType` object for the module.
 
 The implementation of ``from ... import`` (the ``IMPORT_FROM`` bytecode
 implementation) checks if the module it's fetching from is a lazy module
@@ -755,8 +755,8 @@ These changes are limited to bindings explicitly made lazy:
   when it is first used.
 * **Proxy visibility.** Before first use, the bound name refers to a lazy
   proxy. Indirect introspection that touches the value may observe a proxy
-  lazy object representation. After first use (provied the module was
-  imported succesfully), the name is rebound to the real object and becomes
+  lazy object representation. After first use (provided the module was
+  imported successfully), the name is rebound to the real object and becomes
   indistinguishable from an eager import.
 
 Thread-safety and reification
@@ -787,7 +787,7 @@ code that doesn't.
 Runtime performance
 ~~~~~~~~~~~~~~~~~~~
 
-After reification (provided the import was succesful), lazy imports have
+After reification (provided the import was successful), lazy imports have
 **zero overhead**. The adaptive interpreter specializes the bytecode
 (typically after 2-3 accesses), eliminating any checks. For example,
 ``LOAD_GLOBAL`` becomes ``LOAD_GLOBAL_MODULE``, which directly accesses the