[config] add missing enum terminator

the terminator is needed in the enum_value_t array

(I should really make it a real container...)

docs/schemas/config-v1.schema.json

@@ -632,8 +632,7 @@
                             "type": "string",
                             "enum": [
                                 "top",
-                                "cursor",
+                                "cursor"
-                                ""
                             ],
                             "examples": [
                                 "top",

src/lnav_config.cc

@@ -510,7 +510,10 @@ static const struct json_path_container keymap_defs_handlers = {
 
 static const json_path_handler_base::enum_value_t _movement_values[] = {
     {"top", config_movement_mode::TOP},
-    {"cursor", config_movement_mode::CURSOR}};
+    {"cursor", config_movement_mode::CURSOR},
+
+    json_path_handler_base::ENUM_TERMINATOR,
+};
 
 static const struct json_path_container movement_handlers = {
     yajlpp::property_handler("mode")

test/expected/test_cmds.sh_b6a3bb78e9d60e5e1f5ce5b18e40d2f1662707ab.out

@@ -383,6 +383,9 @@ can always use  q  to pop the top view off of the stack.
  x              Toggle the hiding of log message fields. The
                 hidden fields will be replaced with three bullets
                 and highlighted in yellow.
+ CTRL-X         Toggle the cursor mode. Allows moving the selected
+                line instead of keeping it fixed at the top of the
+                current screen.
  F2             Toggle mouse support.
 
 Query

test/expected/test_sql.sh_9b03e9f7a1bc35e408b3a17ee90cfdadea164df6.out

@@ -1,4 +1,4 @@
 Min: 0                    1-23    24-48    49+                   Max: 291690
- Thu Nov 03 00:15:00                                                          
+ Thu Nov 03 00:15:00                                                          
 ▲ 70 values in the range 0.00-3788.18 
  Thu Nov 03 00:20:00