README emoji bugfix

- emojis need a whitespace before and after

README.md

@@ -15,10 +15,10 @@ generally used with any data source.
 
 ## Installation
 
-- Python package: Install from PyPi with `pip install graphxplore`, or checkout versions at (:hammer: TODO: insert pypi link)
+- Python package: Install from PyPi with `pip install graphxplore`, or checkout versions at ( :hammer: TODO insert pypi link)
   - Alternatively, you can clone this repository, checkout a specific commit and use that version via `sys.path`,
     `pip install -e` or `conda develop`
-- Desktop app: Download the installer for a specific release from ( :hammer: TODO: insert release link)
+- Desktop app: Download the installer for a specific release from ( :hammer: TODO insert release link)
   - Alternatively, you can clone this repository, checkout a specific commit, use [NPM](https://www.npmjs.com/) and run 
     the [installation script](./frontend/build_release.sh)
 - Local webserver: Clone this repository, install streamlit with `pip install streamlit`, navigate to 
@@ -27,7 +27,7 @@ generally used with any data source.
 ## Documentation
 
 You can find detailed information about the data-related tasks that you can work in with GraphXplore, as well as its 
-functionalities at (:hammer: insert GitHub pages link). Additionally, the same information is given in the app via various 
+functionalities at ( :hammer: TODO insert GitHub pages link). Additionally, the same information is given in the app via various 
 how-to pages and tooltips.
 
-To read the Python package code documentation navigate to ( :smile: insert readthedocs link)
+To read the Python package code documentation navigate to ( :hammer: TODO insert readthedocs link)