Fix firecrest typos

Author: msimberg

.github/actions/spelling/allow.txt

@@ -26,7 +26,7 @@ ETHZ
 Ehrenfest
 Errigal
 FFT
-FirecREST
+firecrest
 Fock
 GAPW
 GCC

docs/clusters/bristen.md

@@ -74,7 +74,7 @@ See the SLURM documentation for instructions on how to run jobs on the [Grace-Ho
 
 ### FirecREST
 
-Bristen can also be accessed using [FircREST][ref-firecrest] at the `https://api.cscs.ch/ml/firecrest/v1` API endpoint.
+Bristen can also be accessed using [FirecREST][ref-firecrest] at the `https://api.cscs.ch/ml/firecrest/v1` API endpoint.
 
 ### Scheduled Maintenance
 

docs/clusters/clariden.md

@@ -102,7 +102,7 @@ See the SLURM documentation for instructions on how to run jobs on the [Grace-Ho
 
 ### FirecREST
 
-Clariden can also be accessed using [FircREST][ref-firecrest] at the `https://api.cscs.ch/ml/firecrest/v1` API endpoint.
+Clariden can also be accessed using [FirecREST][ref-firecrest] at the `https://api.cscs.ch/ml/firecrest/v1` API endpoint.
 
 ## Maintenance and status
 

docs/clusters/santis.md

@@ -106,7 +106,7 @@ See the SLURM documentation for instructions on how to run jobs on the [Grace-Ho
 
 ### FirecREST
 
-Santis can also be accessed using [FircREST][ref-firecrest] at the `https://api.cscs.ch/ml/firecrest/v1` API endpoint.
+Santis can also be accessed using [FirecREST][ref-firecrest] at the `https://api.cscs.ch/ml/firecrest/v1` API endpoint.
 
 ## Maintenance and status