fix install.lua

install.lua

@@ -4,7 +4,7 @@
 ---@param git string?
 local function clone(branch, git)
     git = git or "git"
-    if vim.fn.executable(git) then
+    if not vim.fn.executable(git) then
         return false, "missing git!"
     end
     local path = vim.fn.stdpath("data") .. "/site/pack/hsv2/opt/hsv2.nvim"
@@ -34,7 +34,7 @@ function HSV2_INSTALL(branch, git)
     local status, output = clone(branch, git)
     if not status then
         vim.api.nvim_echo({
-            { "Failed to clone repository", "Error" },
+            { "Failed to clone repository\n", "Error" },
             { output, "Error" },
         }, true, {})
         return