[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

tests/diff_spec.lua

@@ -306,7 +306,7 @@ describe('CopilotChat.utils.diff', function()
 -old
 +new
 ]]
-    local original_content = 'old'  -- no trailing newline
+    local original_content = 'old' -- no trailing newline
     local result, applied = diff.apply_unified_diff(diff_text, original_content)
     assert.is_true(applied)
     assert.are.same({ 'new' }, result)
@@ -389,9 +389,7 @@ describe('CopilotChat.utils.diff', function()
     for i = 1, 10 do
       table.insert(lines, '+line' .. i)
     end
-    local diff_text = '--- a/foo.txt\n+++ b/foo.txt\n@@ -4,0 +5,10 @@\n'
-      .. table.concat(lines, '\n')
-      .. '\n'
+    local diff_text = '--- a/foo.txt\n+++ b/foo.txt\n@@ -4,0 +5,10 @@\n' .. table.concat(lines, '\n') .. '\n'
     local original = { 'a', 'b', 'c', 'd', 'e' }
     local result, applied = diff.apply_unified_diff(diff_text, table.concat(original, '\n'))
     assert.is_true(applied)