Minor tweaks to test descriptions

Author: nene

test/ddl/function.test.ts

@@ -240,7 +240,7 @@ describe("function", () => {
         `);
       });
 
-      it(`converts single-quoted SQL functions to dollar-quoted SQL functions`, async () => {
+      it(`converts single-quoted SQL function to dollar-quoted SQL function`, async () => {
         expect(
           await pretty(
             dedent`
@@ -261,7 +261,7 @@ describe("function", () => {
         `);
       });
 
-      it(`does not convert single-quoted SQL functions to dollar-quoted SQL functions when they contain dollar-quoted strings`, async () => {
+      it(`does not reformat single-quoted SQL function when its source contains $$-quotes`, async () => {
         expect(
           await pretty(
             dedent`

test/ddl/procedure.test.ts

@@ -144,7 +144,7 @@ describe("procedure", () => {
         `);
       });
 
-      it(`does not convert single-quoted SQL procedures to dollar-quoted SQL procedures when they contain dollar-quoted strings`, async () => {
+      it(`does not reformat single-quoted SQL procedure when its source contains $$-quotes`, async () => {
         expect(
           await pretty(
             dedent`