Add end='' explanation comment to all Python examples

Author: beran-t

docs/sandbox/pty.mdx

@@ -127,7 +127,7 @@ sandbox = Sandbox()
 terminal = sandbox.pty.create(
     cols=80,
     rows=24,
-    on_data=lambda data: print(data.decode(), end=''),
+    on_data=lambda data: print(data.decode(), end=''),  # end='' prevents extra newline
 )
 
 # Send a command as bytes (b'...' is Python's byte string syntax)
@@ -167,7 +167,7 @@ sandbox = Sandbox()
 terminal = sandbox.pty.create(
     cols=80,
     rows=24,
-    on_data=lambda data: print(data.decode(), end=''),
+    on_data=lambda data: print(data.decode(), end=''),  # end='' prevents extra newline
 )
 
 # Resize to new dimensions (in characters)
@@ -283,7 +283,7 @@ sandbox = Sandbox()
 terminal = sandbox.pty.create(
     cols=80,
     rows=24,
-    on_data=lambda data: print(data.decode(), end=''),
+    on_data=lambda data: print(data.decode(), end=''),  # end='' prevents extra newline
 )
 
 # Kill the PTY
@@ -327,7 +327,7 @@ sandbox = Sandbox()
 terminal = sandbox.pty.create(
     cols=80,
     rows=24,
-    on_data=lambda data: print(data.decode(), end=''),
+    on_data=lambda data: print(data.decode(), end=''),  # end='' prevents extra newline
 )
 
 # Send exit command