all: use modern godoc syntax

[zchee]

[codecov[bot]]

Codecov Report

Merging #158 (670bd07) into main (d37e022) will not change coverage. The diff coverage is n/a.

@@          Coverage Diff          @@
##            main    #158   +/-   ##
=====================================
  Coverage   83.2%   83.2%           
=====================================
  Files         14      14           
  Lines       3116    3116           
=====================================
  Hits        2594    2594           
  Misses       522     522           

Flag	Coverage Δ
linux-1.18-nightly	83.2% <ø> (ø)
linux-1.18-stable	83.2% <ø> (ø)
linux-1.19-nightly	83.2% <ø> (ø)
linux-1.19-stable	83.2% <ø> (ø)
linux-1.20-nightly	83.2% <ø> (ø)
linux-1.20-stable	83.2% <ø> (ø)
macos-1.18-nightly	83.2% <ø> (ø)
macos-1.18-stable	83.2% <ø> (ø)
macos-1.19-nightly	83.2% <ø> (ø)
macos-1.19-stable	83.2% <ø> (ø)
macos-1.20-nightly	83.2% <ø> (ø)
macos-1.20-stable	83.2% <ø> (ø)
windows-1.18-nightly	82.4% <ø> (ø)
windows-1.18-stable	82.4% <ø> (ø)
windows-1.19-nightly	82.4% <ø> (ø)
windows-1.19-stable	82.4% <ø> (ø)
windows-1.20-nightly	82.4% <ø> (ø)
windows-1.20-stable	82.4% <ø> (ø)

Impacted Files	Coverage Δ
nvim/api.go	97.2% <ø> (ø)
nvim/nvim.go	78.8% <ø> (ø)