Fixed some grammatical and Exception types issues (#12015)

Fixed some grammatical issues and Exception types.

@baskaryan , @eyurtsev

---------

Co-authored-by: Sanskar Tanwar <142409040+SanskarTanwarShorthillsAI@users.noreply.github.com>
Co-authored-by: UpneetShorthillsAI <144228282+UpneetShorthillsAI@users.noreply.github.com>
Co-authored-by: HarshGuptaShorthillsAI <144897987+HarshGuptaShorthillsAI@users.noreply.github.com>
Co-authored-by: AdityaKalraShorthillsAI <143726711+AdityaKalraShorthillsAI@users.noreply.github.com>
Co-authored-by: SakshiShorthillsAI <144228183+SakshiShorthillsAI@users.noreply.github.com>

libs/experimental/langchain_experimental/comprehend_moderation/base_moderation.py

@@ -61,7 +61,7 @@ class BaseModeration:
                 input_text = message.content
         else:
             raise ValueError(
-                f"Invalid input type {type(input)}. "
+                f"Invalid input type {type(input_text)}. "
                 "Must be a PromptValue, str, or list of BaseMessages."
             )
         return input_text

libs/langchain/langchain/llms/baidu_qianfan_endpoint.py

@@ -96,7 +96,7 @@ class QianfanLLMEndpoint(LLM):
 
             values["client"] = qianfan.Completion(**params)
         except ImportError:
-            raise ValueError(
+            raise ImportError(
                 "qianfan package not found, please install it with "
                 "`pip install qianfan`"
             )

libs/langchain/langchain/llms/databricks.py

@@ -92,7 +92,7 @@ def get_repl_context() -> Any:
 
         return get_context()
     except ImportError:
-        raise ValueError(
+        raise ImportError(
             "Cannot access dbruntime, not running inside a Databricks notebook."
         )