updates to add more docs and correct imports with huggingface embedding server enabled

docs/concepts/memory.mdx

@@ -164,7 +164,8 @@ my_crew = Crew(
     embedder={
         "provider": "google",
         "config": {
-            api_key="YOUR_API_KEY"
+            "api_key": "<YOUR_API_KEY>",
+            "model_name": "<model_name>"
         }
     }
 )
@@ -231,6 +232,25 @@ my_crew = Crew(
     }
 )
 ```
+### Using HuggingFace embeddings
+
+```python Code
+from crewai import Crew, Agent, Task, Process
+
+my_crew = Crew(
+    agents=[...],
+    tasks=[...],
+    process=Process.sequential,
+    memory=True,
+    verbose=True,
+    embedder={
+        "provider": "huggingface",
+        "config": {
+            "api_url": "<api_url>",
+        }
+    }
+)
+```
 
 ### Resetting Memory
 

src/crewai/memory/storage/rag_storage.py

@@ -109,21 +109,26 @@ class RAGStorage(BaseRAGStorage):
                     model_name=model_name,
                     api_key=config.get("api_key"),
                 )
+            elif provider == "huggingface":
+                self.embedder_config = embedding_functions.HuggingFaceEmbeddingServer(
+                    url=config.get("api_url"),
+                )
             else:
                 raise Exception(
-                    f"Unsupported embedding provider: {provider}"
-                )  # TODO: here are the supported providers: [openai, ...]
+                    f"Unsupported embedding provider: {provider}, supported providers: [openai, azure, ollama, vertexai, google, cohere, huggingface]"
+                )
         else:
             validate_embedding_function(self.embedder_config)  # type: ignore # used for validating embedder_config if defined a embedding function/class
             self.embedder_config = self.embedder_config
 
     def _initialize_app(self):
         import chromadb
+        from chromadb.config import Settings
 
         self._set_embedder_config()
         chroma_client = chromadb.PersistentClient(
             path=f"{db_storage_path()}/{self.type}/{self.agents}",
-            settings=chromadb.Settings(allow_reset=self.allow_reset),
+            settings=Settings(allow_reset=self.allow_reset),
         )
 
         self.app = chroma_client