fixup! fixup! fixup! fixup! fixup! fixup! implement review feedback

Author: bastienboutonnet

macros/geo/haversine_distance.sql

@@ -23,10 +23,10 @@ The arguments should be float type.
 -- {% endif %}
 {%- if unit == 'mi' %}
     {% set conversion_rate = 1 %}
-{% elif unit == 'km' %}
+{% elif unit == 'km ' %}
     {% set conversion_rate = 1.60934 %}
 {% else %}
-    {{ exceptions.raise_compiler_error("unit input must be one of 'mi' or 'km'. Got ' ~ unit'") }}
+    {{ exceptions.raise_compiler_error("unit input must be one of 'mi' or 'km'. Got " ~ unit) }}
 {% endif %}
 
     2 * 3961 * asin(sqrt(pow((sin(radians(({{ lat2 }} - {{ lat1 }}) / 2))), 2) +
@@ -54,7 +54,7 @@ The arguments should be float type.
 {% elif unit == 'km' %}
     {% set conversion_rate = 1.60934 %}
 {% else %}
-    {{ exceptions.raise_compiler_error("unit input must be one of 'mi' or 'km'. Got ' ~ unit'") }}
+    {{ exceptions.raise_compiler_error("unit input must be one of 'mi' or 'km'. Got " ~ unit) }}
 {% endif %}
     2 * 3961 * asin(sqrt(pow(sin(({{ radians_lat2 }} - {{ radians_lat1 }}) / 2), 2) +
     cos({{ radians_lat1 }}) * cos({{ radians_lat2 }}) *