fix the bicep file naming (#123)

## Purpose
naming

## Does this introduce a breaking change?
<!-- Mark one with an "x". -->
```
[ ] Yes
[x] No
```

## Pull Request Type
What kind of change does this Pull Request introduce?

<!-- Please check the one that applies to this PR using "x". -->
```
[ ] Bugfix
[ ] Feature
[x] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:
```

infra/bicep/modules/app/petclinic.bicep

@@ -99,7 +99,7 @@ module customersService '../containerapps/containerapp.bicep' = {
   }
 }
 
-module customersServiceConnection '../containerapps/serviceLiner.bicep' = {
+module customersServiceConnection '../containerapps/serviceLinker.bicep' = {
   name: 'customers-service-sql-connection'
   params: {
     appName: customersService.outputs.appName
@@ -133,7 +133,7 @@ module vetsService '../containerapps/containerapp.bicep' = {
   }
 }
 
-module vetsServiceConnection '../containerapps/serviceLiner.bicep' = {
+module vetsServiceConnection '../containerapps/serviceLinker.bicep' = {
   name: 'vets-service-sql-connection'
   params: {
     appName: vetsService.outputs.appName
@@ -167,7 +167,7 @@ module visitsService '../containerapps/containerapp.bicep' = {
   }
 }
 
-module visitsServiceConnection '../containerapps/serviceLiner.bicep' = {
+module visitsServiceConnection '../containerapps/serviceLinker.bicep' = {
   name: 'visits-service-sql-connection'
   params: {
     appName: visitsService.outputs.appName