Add empty space below multi-line param description

---@class ShaderParams
---@field vertex? string
---
---The "Vetex" or vertex-shader is your GLSL-Code as string, its written in a
---C-Dialect.  This shader is busy deforming the geometry of a unit but it can
---not create new polygons. Use it for waves, wobbling surfaces etc.
---@field tcs? string glsl code
---
---The "TCS" or Tesselation Control Shader controls how much tessellation a
---particular patch gets; it also defines the size of a patch, thus allowing it
---to augment data. It can also filter vertex data taken from the vertex shader.
---The main purpose of the TCS is to feed the tessellation levels to the
---Tessellation primitive generator stage, as well as to feed patch data (as its
---output values) to the Tessellation Evaluation Shader stage.
---@field tes? string glsl code

Looks bad

Use the Lua snippet in the issue as a reproduction and trace the parser or renderer that handles multiline @field descriptions. Compare its generated documentation with the current output; done means an empty line appears below each multiline parameter description without affecting adjacent fields.