Update Doom Acario for git gutters (helix-editor#4979)

Edited the diff.delta from green to blue.

Author: Luna

runtime/themes/doom_acario_dark.toml

@@ -41,7 +41,7 @@
 
 'diff.plus' = { fg = 'green' }
 'diff.minus' = { fg = 'red' }
-'diff.delta' = { fg = 'green' }
+'diff.delta' = { fg = 'blue' }
 
 'ui.background'= { bg = 'bg' }
 'ui.cursor' = { bg = 'orange', fg = 'bg-alt' }