Fixed readme

Author: mcasperson

README.md

@@ -39,7 +39,7 @@ variable name:
 * `UDL_WRITEFILE[FILENAME]`: Writes a file e.g. `UDL_WRITEFILE[/etc/myapp/config.json]` with a value of `{"whatever": ["hello"]}`.
 * `UDL_WRITEB64FILE[FILENAME]`: Writes a base64 encoded value to a file e.g. `UDL_WRITEB64FILE[/etc/myapp/config.json]` with a value of `e3doYXRldmVyOiBbaGVsbG9dfQo=`.
 * `UDL_SETVALUE[FILENAME][KEY]`: Sets a value in a config file e.g. `UDL_SETVALUE[/etc/myapp/config.json][entry2:entry3]` or `UDL_SETVALUE[/etc/myapp/config.yaml][entry2:entry3:0]` with a value of `newvalue`.
-* `UDL_SKIP_EMPTY_SETVALUE[FILENAME][KEY]`: Sets a value in a config file e.g. `UDL_SETVALUE[/etc/myapp/config.json][entry2:entry3]` or `UDL_SETVALUE[/etc/myapp/config.yaml][entry2:entry3:0]` with a value of `newvalue` if `newvalue` is not empty of whitespace.
+* `UDL_SKIPEMPTY_SETVALUE[FILENAME][KEY]`: Sets a value in a config file e.g. `UDL_SETVALUE[/etc/myapp/config.json][entry2:entry3]` or `UDL_SETVALUE[/etc/myapp/config.yaml][entry2:entry3:0]` with a value of `newvalue` if `newvalue` is not empty of whitespace.
 
 The second style is useful for Kubernetes, which only supports alphanumberic characters, the dot, the dash, and the 
 underscore in environment variable names. The filename and key is located in the environment variable value: