examples/acme-client.conf spaces -> tabs

[navan]

Convert leading spaces to tabs, matching the rest of the file.

Index: acme-client.conf
===================================================================
RCS file: /cvs/src/etc/examples/acme-client.conf,v
retrieving revision 1.3
diff -u -p -r1.3 acme-client.conf
--- acme-client.conf    14 Sep 2020 16:00:17 -0000      1.3
+++ acme-client.conf    16 Sep 2020 18:44:35 -0000
@@ -12,15 +12,15 @@ authority letsencrypt-staging {
 }
 
 authority buypass {
-    api url "https://api.buypass.com/acme/directory";
-    account key "/etc/acme/buypass-privkey.pem"
-    contact "mailto:m...@example.com";
+       api url "https://api.buypass.com/acme/directory";
+       account key "/etc/acme/buypass-privkey.pem"
+       contact "mailto:m...@example.com";
 }
 
 authority buypass-test {
-    api url "https://api.test4.buypass.no/acme/directory";
-    account key "/etc/acme/buypass-test-privkey.pem"
-    contact "mailto:m...@example.com";
+       api url "https://api.test4.buypass.no/acme/directory";
+       account key "/etc/acme/buypass-test-privkey.pem"
+       contact "mailto:m...@example.com";
 }
 
 domain example.com {