Cleanup and align code examples

Author: vladimir-litvinchik

python-net/getting-started/installation.md

@@ -24,11 +24,6 @@ To install the package, open a terminal and run the following command:
 py -m pip install groupdocs-total-net
 ```
 {{< /tab >}}
-{{< tab "macOS" >}}
-```bash
-python3 -m pip install groupdocs-total-net
-```
-{{< /tab >}}
 {{< /tabs >}}
 
 When running the command on Windows, you can expect an output similar to the following:

python-net/getting-started/licensing-and-evaluation.md

@@ -67,7 +67,7 @@ from groupdocs.conversion import License
 
 def set_license_from_file():
     # Get absolute path to license file
-    license_path = os.path.abspath("./GroupDocs.Total.PythonViaNET.lic")
+    license_path = os.path.abspath("./GroupDocs.Total.lic")
 
     # Instantiate License and set the license
     license = License()
@@ -87,7 +87,7 @@ from groupdocs.conversion import License
 
 def set_license_from_stream():
     # Get absolute path to license file
-    license_path = os.path.abspath("./GroupDocs.Total.PythonViaNET.lic")
+    license_path = os.path.abspath("./GroupDocs.Total.lic")
 
     # Create a readable steam
     with open(license_path, "rb") as license_stream: