Add a space between words

Auditor: peter
Test plan: none

exercises/adding_and_subtracting_decimals_word_problems.html

@@ -37,7 +37,7 @@
                     each and baskets of <var>plural_form(fruit(2))</var> for <code>$<var>fruit_2</var></code> each.
                 </p>
                 <p data-if="isMale(1)">
-                    <var>person(1)</var> decided to buy a basket of <var>plural_form(fruit(1))</var>and a basket of <var>plural_form(fruit(2))</var> {before heading home|because those were his favorite kinds of fruit|}.
+                    <var>person(1)</var> decided to buy a basket of <var>plural_form(fruit(1))</var> and a basket of <var>plural_form(fruit(2))</var> {before heading home|because those were his favorite kinds of fruit|}.
                 </p><p data-else="">
                     <var>person(1)</var> decided to buy a basket of <var>plural_form(fruit(1))</var> and a basket of <var>plural_form(fruit(2))</var> {before heading home|because those were her favorite kinds of fruit|}.
                 </p>