Fix Khoj subtitle in desktop entry, pyproject, cli and Obsidian Readme

src/interface/obsidian/README.md

@@ -1,6 +1,6 @@
 <img src="/src/khoj/interface/web/assets/icons/khoj-logo-sideways.svg" width="200" alt="Khoj Logo">Obsidian
 
-> Natural language search for your Obsidian notes using [Khoj](https://github.com/khoj-ai/khoj)
+> An AI personal assistant for your Digital Brain in Obsidian
 
 ## Table of Contents
 

src/khoj/utils/cli.py

@@ -10,9 +10,7 @@ from khoj.utils.yaml import parse_config_from_file
 
 def cli(args=None):
     # Setup Argument Parser for the Commandline Interface
-    parser = argparse.ArgumentParser(
-        description="Start Khoj; A Natural Language Search Engine for your personal Notes, Transactions and Photos"
-    )
+    parser = argparse.ArgumentParser(description="Start Khoj; An AI personal assistant for your Digital Brain")
     parser.add_argument(
         "--config-file", "-c", default="~/.khoj/khoj.yml", type=pathlib.Path, help="YAML file to configure Khoj"
     )