doc: fix some more typos in docstrings.

Signed-off-by: Romain Bezut <morian@xdec.net>

Author: morian

aiostem/command.py

@@ -427,7 +427,7 @@ def _pydantic_serializer(cls, item: Self, to_dict: SerializerFunctionWrapHandler
 
         This method is the one used by pydantic during serialization.
         Here ``to_dict`` is a function used to call the inner (original) serializer,
-        which provides a nice dictionary with all of our fields already serializer.
+        which provides a nice dictionary with all of our fields already serialized.
 
         """
         return item.serialize_from_struct(to_dict(item))

aiostem/utils/message.py

@@ -106,7 +106,7 @@ def keyword(self) -> str:
         Extract the first word from the header.
 
         Note:
-            An event always provide its keyword in the fist item.
+            An event always provides its keyword in the first item.
 
         """
         if self.is_event and len(self.items) > 0:

aiostem/utils/syntax.py

@@ -23,7 +23,7 @@
 
 def _string_indexof(string: str, separators: str) -> int:
     """
-    Find the index of any of the provided separator.
+    Find the index of any of the provided separators.
 
     Args:
         string: A string to look into.