message: Fix typo in `README` of `iced_glow`
diff: `iced_glow` is a [`glow`] renderer for [`iced_native`]. This renderer supports OpenGL 3.0+ and OpenGL ES 2.0.
  -This is renderer is mostly used as a fallback for hardware that doesn't support [`wgpu`] (Vulkan, Metal or DX12).
  +This renderer is mostly used as a fallback for hardware that doesn't support [`wgpu`] (Vulkan, Metal or DX12).
  Currently, `iced_glow` supports the following primitives:
  - Text, which is rendered using [`glow_glyph`]. No shaping at all.
  