cmd: fmt: Fix brace opening block indentation (#3153)

This fixes indentation for blocks starting with
a brace as:
```Caddyfile
{
    ...
}
```

Fixes #3144

Signed-off-by: Vaibhav <vrongmeal@gmail.com>

1 files changed, 34 insertions, 1 deletions

diff --git a/caddyconfig/caddyfile/formatter_test.go b/caddyconfig/caddyfile/formatter_test.go
index 76eca00..2aa6d27 100644
--- a/caddyconfig/caddyfile/formatter_test.go
+++ b/caddyconfig/caddyfile/formatter_test.go
@@ -45,6 +45,18 @@ m {
 	n { o
 	}
 }
+
+{
+	p
+}
+
+  { q
+}
+
+	{
+{ r
+}
+}
 `)
 	expected := []byte(`
 a
@@ -75,6 +87,20 @@ m {
 		o
 	}
 }
+
+{
+	p
+}
+
+{
+	q
+}
+
+{
+	{
+		r
+	}
+}
 `)
 	testFormat(t, input, expected)
 }
@@ -110,6 +136,9 @@ b {
 
 d { {$E}
 }
+
+{ {$F}
+}
 `)
 	expected := []byte(`
 {$A}
@@ -121,6 +150,10 @@ b {
 d {
 	{$E}
 }
+
+{
+	{$F}
+}
 `)
 	testFormat(t, input, expected)
 }
@@ -190,6 +223,6 @@ g {
 func testFormat(t *testing.T, input, expected []byte) {
 	output := Format(input)
 	if string(output) != string(expected) {
-		t.Errorf("Expected:\n%s\ngot:\n%s", string(output), string(expected))
+		t.Errorf("Expected:\n%s\ngot:\n%s", string(expected), string(output))
 	}
 }