Fix documentation typo and trailing comma in exporters

Fixed two minor issues:
1. corrected "wont" to "won't" in BackendSpanExporter's comment about client error handling.
2. removed unnecessary trailing comma in ConsoleSpanExporter's trace print statement.

These changes improve code readability and documentation accuracy without affecting functionality.

Author: mshsheikh

src/agents/tracing/processors.py

@@ -22,7 +22,7 @@ class ConsoleSpanExporter(TracingExporter):
     def export(self, items: list[Trace | Span[Any]]) -> None:
         for item in items:
             if isinstance(item, Trace):
-                print(f"[Exporter] Export trace_id={item.trace_id}, name={item.name}, ")
+                print(f"[Exporter] Export trace_id={item.trace_id}, name={item.name}")
             else:
                 print(f"[Exporter] Export span: {item.export()}")
 
@@ -121,7 +121,7 @@ def export(self, items: list[Trace | Span[Any]]) -> None:
                     logger.debug(f"Exported {len(items)} items")
                     return
 
-                # If the response is a client error (4xx), we wont retry
+                # If the response is a client error (4xx), we won't retry
                 if 400 <= response.status_code < 500:
                     logger.error(
                         f"[non-fatal] Tracing client error {response.status_code}: {response.text}"