docs: fix two typos the spell check found

"explictly" and "Additionaly", in snippet sources and their generated
snippets. integrations.mdx is updated in place: regenerating it whole
would also drop PyRerankingWatsonxUsage, which has no source.

docs/web-tests/py/test_integrations.py

@@ -1163,7 +1163,7 @@ def test_frameworks_langchain_examples() -> None:
     # --8<-- [start:frameworks_langchain_add_texts]
     vector_store.add_texts(texts=["test_123"], metadatas=[{"source": "wiki"}])
 
-    # Additionaly, to explore the table you can load it into a df or save it in a csv file:
+    # Additionally, to explore the table you can load it into a df or save it in a csv file:
 
     tbl = vector_store.get_table()
     print("tbl:", tbl)

docs/web-tests/py/test_multimodal.py

@@ -54,7 +54,7 @@ def test_multimodal_ingestion(db_path_factory):
     # --8<-- [end:create_dummy_data]
 
     # --8<-- [start:define_schema]
-    # Define schema explictly to ensure image_blob is treated as binary
+    # Define schema explicitly to ensure image_blob is treated as binary
     schema = pa.schema([
         pa.field("id", pa.int32()),
         pa.field("filename", pa.string()),