Fixed documentation for try_consider_else (#20587)

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## Summary

This PR addresses #20570 . In the example, the correct usage had a
bug/issue where in the except block after logging exception, None was
getting returned, which made the linters flag out the code. So adding an
empty raise solves the issue.

## Test Plan

Tested it by building the doc locally.

Author: LilMonk

crates/ruff_linter/src/rules/tryceratops/rules/try_consider_else.rs

@@ -29,6 +29,7 @@ use crate::checkers::ast::Checker;
 ///         return rec
 ///     except ZeroDivisionError:
 ///         logging.exception("Exception occurred")
+///         raise
 /// ```
 ///
 /// Use instead:
@@ -41,6 +42,7 @@ use crate::checkers::ast::Checker;
 ///         rec = 1 / n
 ///     except ZeroDivisionError:
 ///         logging.exception("Exception occurred")
+///         raise
 ///     else:
 ///         print(f"reciprocal of {n} is {rec}")
 ///         return rec