Fix grammar error.

Author: toddjonker

runtime/src/test/fusion/modules/documentation.fusion

@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 (module documentation "/fusion"
-  "These is the module body doc."
+  "This is the module body doc."
 
   (require "/fusion/private/syntax")
 

runtime/src/test/java/dev/ionfusion/fusion/DocumentationAccessTest.java

@@ -71,8 +71,8 @@ public void docForModule()
     {
         ModuleDocs doc = moduleDocs("/documentation");
 
-        assertThat(doc.getOneLiner(), is("These is the module body doc."));
-        assertThat(doc.getOverview(), is("These is the module body doc."));
+        assertThat(doc.getOneLiner(), is("This is the module body doc."));
+        assertThat(doc.getOverview(), is("This is the module body doc."));
 
         assertThat(doc.getProvidedNames(),
                    containsInAnyOrder("const", "macro", "proc"));