Fix some codespell warnings

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	codespell -w

(using codespell v2.1.0).

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

lib/c/criu.h

@@ -187,7 +187,7 @@ int criu_dump_iters(int (*more)(criu_predump_info pi));
  * As this library is just forwarding all tasks to an
  * independent (of this library) CRIU binary, the actual
  * version of the CRIU binary can be different then the
- * hardcoded values in the libary (version.h).
+ * hardcoded values in the library (version.h).
  * To be able to easily check the version of the CRIU binary
  * the function criu_get_version() returns the version
  * in the following format:

lib/py/images/images.py

@@ -87,7 +87,7 @@ class entry_handler:
     def load(self, f, pretty=False, no_payload=False):
         """
         Convert criu image entries from binary format to dict(json).
-        Takes a file-like object and returnes a list with entries in
+        Takes a file-like object and returns a list with entries in
         dict(json) format.
         """
         entries = []

lib/py/images/pb2dict.py

@@ -23,7 +23,7 @@ if "encodebytes" not in dir(base64):
 # here are some of them:
 #   - both have a common bug in treating optional field with empty
 #     repeated inside.
-#   - protobuf-to-json is not avalible in pip or in any other python
+#   - protobuf-to-json is not available in pip or in any other python
 #     repo, so it is hard to distribute and we can't rely on it.
 #   - both do not treat enums in a way we would like to. They convert
 #     protobuf enum to int, but we need a string here, because it is