docs: support inline markdown

- Tags are now created with `[tag]()`
- References are now created with `[tag]`
- Code spans are no longer wrapped

test/functional/script/luacats_grammar_spec.lua

@@ -139,4 +139,16 @@ describe('luacats grammar', function()
       type = 'string|table|(fun(diagnostic:vim.Diagnostic,i:integer,total:integer): string, string)',
     }
   )
+
+  test('@field [integer] integer', {
+    kind = 'field',
+    name = '[integer]',
+    type = 'integer',
+  })
+
+  test('@field [1] integer', {
+    kind = 'field',
+    name = '[1]',
+    type = 'integer',
+  })
 end)

test/functional/script/text_utils_spec.lua

@@ -55,4 +55,6 @@ describe('md_to_vimdoc', function()
     '          para2',
     '',
   }, 0, 10, 78)
+
+  test('inline 1', { '(`string`)' }, { '(`string`)', '' })
 end)