Fix typos in docstrings across multiple files (#101)

* Fix typos in docstrings across multiple files: 'conversaction' -> 'conversation' and 'dsiabled' -> 'disabled'. Update comments for clarity.

* Fix typos in comments and docstrings across multiple files

- Corrected "reqeust" to "request" in auth_preprocessor.py
- Fixed "credentails" to "credentials" in auth_tool.py
- Updated "agetn" to "agent" in cli_eval.py
- Changed "creiteria" to "criteria" in cli_tools_click.py

---------

Co-authored-by: fangyu <fangyu.jobs@gmail.com>
Co-authored-by: Hangfei Lin <hangfei@google.com>

src/google/adk/auth/auth_preprocessor.py

@@ -76,7 +76,7 @@ class _AuthLlmRequestProcessor(BaseLlmRequestProcessor):
 
     for i in range(len(events) - 2, -1, -1):
       event = events[i]
-      # looking for the system long running reqeust euc function call
+      # looking for the system long running request euc function call
       function_calls = event.get_function_calls()
       if not function_calls:
         continue
@@ -92,7 +92,7 @@ class _AuthLlmRequestProcessor(BaseLlmRequestProcessor):
       if not tools_to_resume:
         continue
 
-      # found the the system long running reqeust euc function call
+      # found the the system long running request euc function call
       # looking for original function call that requests euc
       for j in range(i - 1, -1, -1):
         event = events[j]

src/google/adk/auth/auth_tool.py

@@ -19,7 +19,7 @@ from .auth_schemes import AuthScheme
 
 
 class AuthConfig(BaseModel):
-  """The auth config sent by tool asking client to collect auth credentails and
+  """The auth config sent by tool asking client to collect auth credentials and
 
   adk and client will help to fill in the response
   """