[api-documenter] Ensure empty line after tables (#5256)

* Ensure empty line after tables (fix #4878)

* update api-extractor-scenarios snapshots

* Update common/changes/@microsoft/api-documenter/fix-api-documenter-missing-new-lines-after-tables_2025-06-17-22-12.json

---------

Co-authored-by: Pete Gonzalez <[email protected]>

Author: Ragnar-Oock

apps/api-documenter/src/markdown/CustomMarkdownEmitter.ts

@@ -136,7 +136,7 @@ export class CustomMarkdownEmitter extends MarkdownEmitter {
         }
         writer.write('</tbody>');
         writer.write('</table>');
-        writer.writeLine();
+        writer.ensureSkippedLine();
 
         break;
       }

apps/api-documenter/src/markdown/test/CustomMarkdownEmitter.test.ts

@@ -171,6 +171,13 @@ test('render Markdown from TSDoc', () => {
     )
   ]);
 
+  output.appendNodes([
+    new DocHeading({ configuration, title: 'After a table' }),
+    new DocParagraph({ configuration }, [
+      new DocPlainText({ configuration, text: 'just checking lines after a table' }),
+    ])
+  ]);
+
   const stringBuilder: StringBuilder = new StringBuilder();
   const apiModel: ApiModel = new ApiModel();
   const markdownEmitter: CustomMarkdownEmitter = new CustomMarkdownEmitter(apiModel);

apps/api-documenter/src/markdown/test/__snapshots__/CustomMarkdownEmitter.test.ts.snap

@@ -75,5 +75,10 @@ Cell 2
 
 </td></tr>
 </tbody></table>
+
+## After a table
+
+just checking lines after a table
+
 "
 `;

build-tests/api-documenter-scenarios/etc/inheritedMembers/markdown/api-documenter-scenarios.class1.md

@@ -166,3 +166,4 @@ Some overload. Overrides `Class3.someOverload`<!-- -->.
 
 </td></tr>
 </tbody></table>
+

build-tests/api-documenter-scenarios/etc/inheritedMembers/markdown/api-documenter-scenarios.class1.someoverload.md

@@ -45,6 +45,7 @@ boolean \| string
 
 </td></tr>
 </tbody></table>
+
 **Returns:**
 
 void

build-tests/api-documenter-scenarios/etc/inheritedMembers/markdown/api-documenter-scenarios.class2.md

@@ -161,3 +161,4 @@ Some overload.
 
 </td></tr>
 </tbody></table>
+

build-tests/api-documenter-scenarios/etc/inheritedMembers/markdown/api-documenter-scenarios.class2.somemethod.md

@@ -45,6 +45,7 @@ boolean
 
 </td></tr>
 </tbody></table>
+
 **Returns:**
 
 void

build-tests/api-documenter-scenarios/etc/inheritedMembers/markdown/api-documenter-scenarios.iextendsinterfaceliketypealias.md

@@ -81,3 +81,4 @@ Some prop.
 
 </td></tr>
 </tbody></table>
+

build-tests/api-documenter-scenarios/etc/inheritedMembers/markdown/api-documenter-scenarios.iextendsmultipleinterfaces.md

@@ -96,3 +96,4 @@ A third prop.
 
 </td></tr>
 </tbody></table>
+

build-tests/api-documenter-scenarios/etc/inheritedMembers/markdown/api-documenter-scenarios.iinterface1.md

@@ -73,3 +73,4 @@ Some prop.
 
 </td></tr>
 </tbody></table>
+