docs: Fix broken markdown-magic embed line numbers in website articles (

microsoft#21756)

Recent updates to package READMEs broke the embed line numbers for some
articles. This fixes them.

docs/content/docs/data-structures/counter.md

@@ -7,7 +7,7 @@ menuPosition: 5
      argument) and then run "npm run build:md-magic" from the docs folder. That will update all autogenerated
      content, so you should commit the resulting changes. -->
 
-<!-- AUTO-GENERATED-CONTENT:START (INCLUDE:path=../../../../packages/dds/counter/README.md&start=18&end=155) -->
+<!-- AUTO-GENERATED-CONTENT:START (INCLUDE:path=../../../../packages/dds/counter/README.md&start=38&end=174)) -->
 
 <!-- prettier-ignore-start -->
 <!-- NOTE: This section is automatically generated by embedding the referenced file contents. Do not update these generated contents directly. -->

docs/content/docs/data-structures/sequences.md

@@ -9,7 +9,7 @@ aliases:
      argument) and then run "npm run build:md-magic" from the docs folder. That will update all autogenerated
      content, so you should commit the resulting changes. -->
 
-<!-- AUTO-GENERATED-CONTENT:START (INCLUDE:path=../../../../packages/dds/sequence/README.md&start=18&end=511) -->
+<!-- AUTO-GENERATED-CONTENT:START (INCLUDE:path=../../../../packages/dds/sequence/README.md&start=20&end=512) -->
 
 <!-- prettier-ignore-start -->
 <!-- NOTE: This section is automatically generated by embedding the referenced file contents. Do not update these generated contents directly. -->

docs/content/docs/data-structures/string.md

@@ -59,7 +59,7 @@ efficient spatial querying of the nearest Marker to a given position. -->
      argument) and then run "npm run build:md-magic" from the docs folder. That will update all autogenerated
      content, so you should commit the resulting changes. -->
 
-<!-- AUTO-GENERATED-CONTENT:START (INCLUDE:path=../../../../packages/dds/sequence/README.md&start=591&end=608) -->
+<!-- AUTO-GENERATED-CONTENT:START (INCLUDE:path=../../../../packages/dds/sequence/README.md&start=592&end=609) -->
 
 <!-- prettier-ignore-start -->
 <!-- NOTE: This section is automatically generated by embedding the referenced file contents. Do not update these generated contents directly. -->
@@ -80,8 +80,6 @@ efficient spatial querying of the nearest Marker to a given position. -->
     -   [collaborativeTextArea](https://github.com/microsoft/FluidFramework/blob/main/examples/utils/example-utils/src/reactInputs/CollaborativeTextArea.tsx)
     -   [collaborativeInput](https://github.com/microsoft/FluidFramework/blob/main/examples/utils/example-utils/src/reactInputs/CollaborativeInput.tsx)
 
-<!-- This line ends the content that is copied to the string.md README -->
-
 <!-- prettier-ignore-end -->
 
 <!-- AUTO-GENERATED-CONTENT:END -->

docs/content/docs/deep/dataobject-aqueduct.md

@@ -15,7 +15,7 @@ how to combine those distributed data structures with custom code (business logi
      argument) and then run "npm run build:md-magic" from the docs folder. That will update all autogenerated
      content, so you should commit the resulting changes. -->
 
-<!-- AUTO-GENERATED-CONTENT:START (INCLUDE:path=../../../../packages/framework/aqueduct/README.md&start=17&end=-27) -->
+<!-- AUTO-GENERATED-CONTENT:START (INCLUDE:path=../../../../packages/framework/aqueduct/README.md&start=19&end=-27) -->
 
 <!-- prettier-ignore-start -->
 <!-- NOTE: This section is automatically generated by embedding the referenced file contents. Do not update these generated contents directly. -->