Fix formatting of TextureDimensionError::LimitExceeded. (#2799)

in the thiserror error format string, `{0:?}` ends up referring to the
first named argument, not the first struct field or a compile error, so
the error was incorrectly
    Dimension 32768 value 32768 exceeds the limit of 16384
instead of
    Dimension X value 32768 exceeds the limit of 16384

wgpu-core/src/resource.rs

@@ -330,7 +330,7 @@ pub enum TextureErrorDimension {
 pub enum TextureDimensionError {
     #[error("Dimension {0:?} is zero")]
     Zero(TextureErrorDimension),
-    #[error("Dimension {0:?} value {given} exceeds the limit of {limit}")]
+    #[error("Dimension {dim:?} value {given} exceeds the limit of {limit}")]
     LimitExceeded {
         dim: TextureErrorDimension,
         given: u32,