pybricksdev.connections.pybricks: fix write_line endline

While Miropython prints `\r\n` for endlines, when receiving input, it
only looks for `\n`.

Author: dlech

CHANGELOG.md

@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- Fixed endline in `PybricksHub.write_line()`.
+
 ## [1.0.0-alpha.44] - 2023-04-20
 
 ### Fixed

pybricksdev/connections/pybricks.py

@@ -389,13 +389,13 @@ async def write_string(self, value: str) -> None:
 
     async def write_line(self, value: str) -> None:
         """
-        Writes a string to stdin on the hub and adds a newline (``\\r\\n``)
+        Writes a string to stdin on the hub and adds a newline (``\\n``)
         to the end.
 
         Args:
             value: The string to write.
         """
-        await self.write_string(value + self.EOL.decode())
+        await self.write_string(value + "\n")
 
     async def read_line(self) -> str:
         """