installation-instructions.md

@@ -249,7 +249,7 @@ and add the following line to the bottom:
 deb https://downloads.skewed.de/apt jammy main
 ```
 (``jammy`` is the current version of Ubuntu at the time of this writing, it should replaced with most current version).
-You should then add the signing key,
+You should then add the signing key:
 ```
 sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-key 612DEFB798507F25
 ```
@@ -257,7 +257,7 @@ and update the package list:
 ```
 sudo apt-get update
 ```
-To enable all functionalities, the following extra packages need to be installed
+To enable all functionalities, the following extra packages need to be installed:
 ```
 sudo apt-get install python3-cairo python3-gi-cairo python3-gi gnome pip
 sudo pip install zstandard