Fix error messages grammar (aio-libs#10798)

Author: davidxia

.github/PULL_REQUEST_TEMPLATE.md

@@ -24,8 +24,8 @@ entertain early in the review process. Thank you in advance!
 
 ## Related issue number
 
-<!-- Are there any issues opened that will be resolved by merging this change? -->
-<!-- Remember to prefix with 'Fixes' if it should close the issue (e.g. 'Fixes #123'). -->
+<!-- Will this resolve any open issues? -->
+<!-- Remember to prefix with 'Fixes' if it closes an issue (e.g. 'Fixes #123'). -->
 
 ## Checklist
 

aiohttp/_http_parser.pyx

@@ -506,10 +506,10 @@ cdef class HttpParser:
         if self._payload is not None:
             if self._cparser.flags & cparser.F_CHUNKED:
                 raise TransferEncodingError(
-                    "Not enough data for satisfy transfer length header.")
+                    "Not enough data to satisfy transfer length header.")
             elif self._cparser.flags & cparser.F_CONTENT_LENGTH:
                 raise ContentLengthError(
-                    "Not enough data for satisfy content length header.")
+                    "Not enough data to satisfy content length header.")
             elif cparser.llhttp_get_errno(self._cparser) != cparser.HPE_OK:
                 desc = cparser.llhttp_get_error_reason(self._cparser)
                 raise PayloadEncodingError(desc.decode('latin-1'))

aiohttp/http_exceptions.py

@@ -69,7 +69,7 @@ class TransferEncodingError(PayloadEncodingError):
 
 
 class ContentLengthError(PayloadEncodingError):
-    """Not enough data for satisfy content length header."""
+    """Not enough data to satisfy content length header."""
 
 
 class LineTooLong(BadHttpMessage):

aiohttp/http_parser.py

@@ -792,11 +792,11 @@ def feed_eof(self) -> None:
             self.payload.feed_eof()
         elif self._type == ParseState.PARSE_LENGTH:
             raise ContentLengthError(
-                "Not enough data for satisfy content length header."
+                "Not enough data to satisfy content length header."
             )
         elif self._type == ParseState.PARSE_CHUNKED:
             raise TransferEncodingError(
-                "Not enough data for satisfy transfer length header."
+                "Not enough data to satisfy transfer length header."
             )
 
     def feed_data(