Update README.md - minor visual changes

README.md

@@ -12,21 +12,21 @@ A mini SDI-12 implementation for getting sensor info over UART using directional
 
 **is_active** (address)
   * args:
-    * SDI-12 sensor address. Typical range: 0-9.
+    * `address`: SDI-12 sensor address. Typical range: 0-9.
   * returns:
     * Boolean: whether the sensor has send back acknowledgment
 
 **get_sensor_info** (address)
   * args:
-    * SDI-12 sensor address. Typical range: 0-9.
+    * `address`: SDI-12 sensor address. Typical range: 0-9.
   * returns:
-    * Tuple (manufacturer, model): The manufacturer and model name as reported by the sensor. If sensor is unreachable, returns `(None, None)`
+    * Tuple `(manufacturer, model)`: The manufacturer and model name as reported by the sensor. If sensor is unreachable, returns `(None, None)`
 
 **get_sensor_info_ex** (address)
   * args:
-    * SDI-12 sensor address. Typical range: 0-9.
+    * `address`: SDI-12 sensor address. Typical range: 0-9.
   * returns:
-    * Tuple (manufacturer, model, version, extra_info): The manufacturer, model, version, extra_info name as reported by the sensor. If sensor is unreachable, returns `(None, None, None, None)`
+    * Tuple `(manufacturer, model, version, extra_info)`: The manufacturer, model, version, extra_info name as reported by the sensor. If sensor is unreachable, returns `(None, None, None, None)`
 
 **get_measurement** (address, measurement_name="M", number_of_measurements_digit_count=1, force_wait_period=False)
 
@@ -42,10 +42,10 @@ Sends a request for data measurement to the sensor and returns the data provided
   output: [1, 2, -3, 4.1, 5, 6, 7, 8, 9]
 ```
   * args:
-    * SDI-12 sensor address. Typical range: 0-9.
-    * measurement_name: Configures the name of the query. Default is "M" as the default query is "aM!".
-    * number_of_measurements_digit_count: Defines the number of expected digits in response. Default is 1 for the responses 'atttn'.
-    * force_wait_period: ignore service requests between measurement request and measurement retrieval and wait for the period of time requrned by the measurement request response.
+    * `address`: SDI-12 sensor address. Typical range: 0-9.
+    * `measurement_name`: Configures the name of the query. Default is "M" as the default query is "aM!".
+    * `number_of_measurements_digit_count`: Defines the number of expected digits in response. Default is 1 for the responses 'atttn'.
+    * `force_wait_period`: ignore service requests between measurement request and measurement retrieval and wait for the period of time requrned by the measurement request response.
   * returns:
     * Measurement data array: an array containing all the data collected from the sensor. For details on each data value, please advise sensor manufacturer manuals. If sensor is unreachable, returns `None`