fix: rename more appropriately (also a typo) (#378)

lua/lazyvim/plugins/treesitter.lua

@@ -28,7 +28,7 @@ return {
     },
     keys = {
       { "<c-space>", desc = "Increment selection" },
-      { "<bs>", desc = "Schrink selection", mode = "x" },
+      { "<bs>", desc = "Decrement selection", mode = "x" },
     },
     ---@type TSConfig
     opts = {