fix: Use sentence case for "Array element"

#28

Original pull request:
#116

Ben has edited the changelog only.

Co-authored-by: James McKinney <26463+jpmckinney@users.noreply.github.com>
Co-authored-by: Ben Webb <ben.webb@opendataservices.coop>

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Fixed
 
 - Fix crash when tmp directory is on different filesystem https://github.com/OpenDataServices/lib-cove/issues/84
+- Use sentence case consistently in validation error messages https://github.com/OpenDataServices/lib-cove/issues/28
 
 ## Changed
 

libcove/lib/common.py

@@ -888,7 +888,7 @@ def get_schema_validation_errors(
             header = e.path[-1]
             if isinstance(e.path[-1], int) and len(e.path) >= 2:
                 # We're dealing with elements in an array of items at this point
-                pre_header = "Array Element "
+                pre_header = "Array element "
                 header_extra = "{}/[number]".format(e.path[-2])
 
         null_clause = ""