Fix typos (#11607)

### What problem does this PR solve?

Fix typos

### Type of change

- [x] Fix typos

README.md

@@ -194,7 +194,7 @@ releases! 🌟
   
    # git checkout v0.22.1
    # Optional: use a stable tag (see releases: https://github.com/infiniflow/ragflow/releases)
-   # This steps ensures the **entrypoint.sh** file in the code matches the Docker image version.
+   # This step ensures the **entrypoint.sh** file in the code matches the Docker image version.
    
    # Use CPU for DeepDoc tasks:
    $ docker compose -f docker-compose.yml up -d

agent/tools/code_exec.py

@@ -69,7 +69,7 @@ class CodeExecParam(ToolParamBase):
         self.meta: ToolMeta = {
             "name": "execute_code",
             "description": """
-This tool has a sandbox that can execute code written in 'Python'/'Javascript'. It recieves a piece of code and return a Json string.
+This tool has a sandbox that can execute code written in 'Python'/'Javascript'. It receives a piece of code and return a Json string.
 Here's a code example for Python(`main` function MUST be included):
 def main() -> dict:
     \"\"\"

rag/prompts/citation_prompt.md

@@ -106,4 +106,4 @@ REMEMBER:
 - Each citation supports the ENTIRE sentence
 - When in doubt, ask: "Would a fact-checker need to verify this?"
 - Place citations at sentence end, before punctuation
-- Format likes this is FORBIDDEN: [ID:0, ID:5, ID:...]. It MUST be seperated like, [ID:0][ID:5]...
+- Format likes this is FORBIDDEN: [ID:0, ID:5, ID:...]. It MUST be separated like, [ID:0][ID:5]...