Fix formatting after multiple merges.

Author: evanp

ERRATA.md

@@ -11,7 +11,7 @@ This document includes errata for the [Activity Streams](https://www.w3.org/TR/a
   - Example 150 has `latitude` and `longitude` properties with string values.
     The range of these properties is `xsd:float`. A correct example would be:
 
-   ```json
+    ```json
     {
       "@context": "https://www.w3.org/ns/activitystreams",
       "type": "Place",
@@ -56,14 +56,15 @@ This document includes errata for the [Activity Streams](https://www.w3.org/TR/a
       ]
     }
     ```
-    
+
   - The range of the `units` property is given as an enumerated set of values.
     Due to a formatting error, some of these values are shown with an incorrect
     leading space character. The correct range is:
 
     ```text
     "cm" | "feet" | "inches" | "km" | "m" | "miles" | xsd:anyURI
-    
+    ```
+
   - Example 58 includes a `summary` property on a `Mention` object, which is
     not allowed. A corrected example: