docs: minor typo fix

Author: thephez

docs/user/wallets/dashcore/installation-linux.rst

@@ -49,7 +49,7 @@ To download the detached signature, click the **Signature** button on the
 wallet download page and save it to the same folder as the downloaded
 binary.
 
-All releases of Dash since 0.16.0 are signed using GPG the following key:
+All releases of Dash since 0.16.0 are signed using GPG with the following key:
 
 - Pasta (pasta) with the key ``5252 7BED ABE8 7984``, `verifiable on Keybase
   <https://keybase.io/pasta>`__ (`download <https://keybase.io/pasta/pgp_keys.asc>`__)

docs/user/wallets/dashcore/installation-macos.rst

@@ -40,7 +40,7 @@ button on the wallet download page and save it to the same folder as the
 downloaded binary (which should be by default). You may also need to 
 download GPG, which you can do via https://gpgtools.org/.
 
-All releases of Dash since 0.16.0 are signed using GPG the following key:
+All releases of Dash since 0.16.0 are signed using GPG with the following key:
 
 - Pasta (pasta) with the key ``5252 7BED ABE8 7984``, `verifiable on Keybase
   <https://keybase.io/pasta>`__ (`download <https://keybase.io/pasta/pgp_keys.asc>`__)

docs/user/wallets/dashcore/installation-windows.rst

@@ -47,7 +47,7 @@ download the detached signature, click the **Installer Signature**
 button on the wallet download page and save it to the same folder as the
 downloaded binary.
 
-All releases of Dash since 0.16.0 are signed using GPG the following key:
+All releases of Dash since 0.16.0 are signed using GPG with the following key:
 
 - Pasta (pasta) with the key ``5252 7BED ABE8 7984``, `verifiable on Keybase
   <https://keybase.io/pasta>`__ (`download <https://keybase.io/pasta/pgp_keys.asc>`__)