test: update another improperly rendered range

This one almost looks like it fits into the other failure categories,
but without identifying root causes, it's hard to say for sure. The span
here does end after a line terminator, so it feels like it's like the
rest.

I also isolated this change since I found the snapshot diff pretty hard
to read and wanted to look at it more closely. In this case, the before
is:

    E204.py:31:2: E204 [*] Whitespace after decorator
       |
    30 |   # E204
    31 |   @ \
       |  __^
    32 | | foo
       | |_^ E204
    33 |   def baz():
    34 |       print('baz')
       |
       = help: Remove whitespace

And the after is:

    E204.py:31:2: E204 [*] Whitespace after decorator
       |
    30 | # E204
    31 | @ \
       |  ^^ E204
    32 | foo
    33 | def baz():
    34 |     print('baz')
       |
       = help: Remove whitespace

The updated rendering is clearly an improvement, since `foo` itself is
not really the subject of the diagnostic. The whitespace is.

Also, the new rendering matches the span fed to `annotate-snippets`,
where as the old rendering does not.

Author: BurntSushi

crates/ruff_linter/src/rules/pycodestyle/snapshots/ruff_linter__rules__pycodestyle__tests__E204_E204.py.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/ruff_linter/src/rules/pycodestyle/mod.rs
-snapshot_kind: text
 ---
 E204.py:14:2: E204 [*] Whitespace after decorator
    |
@@ -44,13 +43,12 @@ E204.py:25:6: E204 [*] Whitespace after decorator
 
 E204.py:31:2: E204 [*] Whitespace after decorator
    |
-30 |   # E204
-31 |   @ \
-   |  __^
-32 | | foo
-   | |_^ E204
-33 |   def baz():
-34 |       print('baz')
+30 | # E204
+31 | @ \
+   |  ^^ E204
+32 | foo
+33 | def baz():
+34 |     print('baz')
    |
    = help: Remove whitespace