Fix fish_indent tests

tests/indent.in

@@ -93,7 +93,6 @@ echo < stdin >>appended yes 2>&1 no > stdout maybe 2>&    4 | cat 2>| cat
 ' | $indent
 
 echo \nTest normalization of keywords
-# issue 2921
 echo -n '
 i\
 f true

tests/indent.out

@@ -97,13 +97,16 @@ echo <stdin >>appended yes 2>&1 no >stdout maybe 2>&4 | cat 2>| cat
 
 Test normalization of keywords
 
-if true
+i\
+f true
     echo yes
-end
+en\
+d
 
-while true
-    builtin yes
-end
+"whil\
+e" true
+    "builtin" yes
+en"d"
 
 alpha | \
     beta