docs ecosystem/integrations update 4 (#5590)

# docs `ecosystem/integrations` update 4

Added missed integrations. Fixed inconsistencies. 

## Who can review?

@hwchase17 
@dev2049

docs/integrations/spacy.md

@@ -0,0 +1,20 @@
+# spaCy
+
+>[spaCy](https://spacy.io/) is an open-source software library for advanced natural language processing, written in the programming languages Python and Cython.
+ 
+## Installation and Setup
+
+
+```bash
+pip install spacy
+```
+
+
+
+## Text Splitter
+
+See a [usage example](../modules/indexes/text_splitters/examples/spacy.ipynb).
+
+```python
+from langchain.llms import SpacyTextSplitter
+```