Fix nonexistent file paths in Python client README and correct doc typos (#18797)

The Python client README pointed at client-py/src/iotdb/Session.py and
client-py/src/SessionExample.py, and linked to client-py/SessionExample.py.
None of those exist: the module is client-py/iotdb/Session.py and the
example is client-py/session_example.py.

Also corrects Futher -> Further in the same README, and mannually ->
manually, offical -> official in docker/ReadMe.md.

Author: toyeshhm

docker/ReadMe.md

@@ -70,7 +70,7 @@ apache-iotdb-2.0.11-SNAPSHOT-all-bin.zip
 apache-iotdb-2.0.11-SNAPSHOT-ainode-bin.zip
 ```
 
-To avoid mannually copy these files, you can run our `do-docker-build.sh` with argument `-b`.
+To avoid manually copy these files, you can run our `do-docker-build.sh` with argument `-b`.
 
 # How to run IoTDB server 
 
@@ -85,7 +85,7 @@ docker run -d --name iotdb -p 6667:6667 -p 31999:31999 -p 8181:8181 -p 5555:5555
 ```shell
 docker run -d --name iotdb -p 6667:6667 -p 31999:31999 -p 8181:8181 -p 5555:5555 -p 9003:9003 -p 40010:40010 apache/iotdb:<version>
 ```
-Since 1.0.0, see [offical documents.](https://iotdb.apache.org/UserGuide/latest/QuickStart/QuickStart.html)
+Since 1.0.0, see [official documents.](https://iotdb.apache.org/UserGuide/latest/QuickStart/QuickStart.html)
 
 # How to register AINode to IoTDB cluster
 

iotdb-client/client-py/README.md

@@ -47,7 +47,7 @@ You have to install thrift (>=0.14.1) before using the package.
 
 First, download the latest package: `pip3 install apache-iotdb`
 
-You can get an example of using the package to read and write data at here: [Example](https://github.com/apache/iotdb/blob/master/iotdb-client/client-py/SessionExample.py)
+You can get an example of using the package to read and write data at here: [Example](https://github.com/apache/iotdb/blob/master/iotdb-client/client-py/session_example.py)
 
 An example of aligned timeseries: [Aligned Timeseries Session Example](https://github.com/apache/iotdb/blob/master/iotdb-client/client-py/SessionAlignedTimeseriesExample.py)
 
@@ -576,7 +576,7 @@ This folder is ignored from git and should **never be pushed to git!**
 
 ### Session Client & Example
 
-We packed up the Thrift interface in `client-py/src/iotdb/Session.py` (similar with its Java counterpart), also provided an example file `client-py/src/SessionExample.py` of how to use the session module. please read it carefully.
+We packed up the Thrift interface in `client-py/iotdb/Session.py` (similar with its Java counterpart), also provided an example file `client-py/session_example.py` of how to use the session module. please read it carefully.
 
 
 Or, another simple example:
@@ -606,7 +606,7 @@ To run all defined tests just type `pytest .` in the root folder.
 
 
 
-### Futher Tools
+### Further Tools
 
 [black](https://pypi.org/project/black/) and [flake8](https://pypi.org/project/flake8/) are installed for autoformatting and linting.
 Both can be run by `black .` or `flake8 .` respectively.