Fix typos in reference architectures

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

doc/administration/reference_architectures/10k_users.md

@@ -1438,7 +1438,7 @@ On each node:
    gitlab_workhorse['enable'] = false
    grafana['enable'] = false
 
-   # If you run a seperate monitoring node you can disable these services
+   # If you run a separate monitoring node you can disable these services
    alertmanager['enable'] = false
    prometheus['enable'] = false
 

doc/administration/reference_architectures/25k_users.md

@@ -1438,7 +1438,7 @@ On each node:
    gitlab_workhorse['enable'] = false
    grafana['enable'] = false
 
-   # If you run a seperate monitoring node you can disable these services
+   # If you run a separate monitoring node you can disable these services
    alertmanager['enable'] = false
    prometheus['enable'] = false
 

doc/administration/reference_architectures/2k_users.md

@@ -419,7 +419,7 @@ To configure the Gitaly server:
    gitlab_workhorse['enable'] = false
    grafana['enable'] = false
 
-   # If you run a seperate monitoring node you can disable these services
+   # If you run a separate monitoring node you can disable these services
    alertmanager['enable'] = false
    prometheus['enable'] = false
 

doc/administration/reference_architectures/3k_users.md

@@ -1145,7 +1145,7 @@ On each node:
    grafana['enable'] = false
    gitlab_exporter['enable'] = false
 
-   # If you run a seperate monitoring node you can disable these services
+   # If you run a separate monitoring node you can disable these services
    alertmanager['enable'] = false
    prometheus['enable'] = false
 

doc/administration/reference_architectures/50k_users.md

@@ -1438,7 +1438,7 @@ On each node:
    gitlab_workhorse['enable'] = false
    grafana['enable'] = false
 
-   # If you run a seperate monitoring node you can disable these services
+   # If you run a separate monitoring node you can disable these services
    alertmanager['enable'] = false
    prometheus['enable'] = false
 

doc/administration/reference_architectures/5k_users.md

@@ -1144,7 +1144,7 @@ On each node:
    grafana['enable'] = false
    gitlab_exporter['enable'] = false
 
-   # If you run a seperate monitoring node you can disable these services
+   # If you run a separate monitoring node you can disable these services
    alertmanager['enable'] = false
    prometheus['enable'] = false