docs: fix docs following #17238

[nbusseneau]

It seems we forgot to update helm-values.rst in #17238, yielding issues when building documentation locally with make render-docs.

Please fix the following spelling mistakes:
* Documentation/helm-reference.rst:172: (certManagerIssuerRef) 
* Documentation/helm-reference.rst:173: (certmanager) 
* Documentation/helm-reference.rst:173: (certmanager) 
* Documentation/helm-reference.rst:208: (extraDnsNames) 
* Documentation/helm-reference.rst:212: (extraIpAddresses) 
* Documentation/helm-reference.rst:580: (serviceAnnotations) 
* Documentation/helm-reference.rst:660: (extraDnsNames) 
* Documentation/helm-reference.rst:664: (extraIpAddresses) 
* Documentation/helm-reference.rst:688: (certManagerIssuerRef) 
* Documentation/helm-reference.rst:689: (certmanager) 
* Documentation/helm-reference.rst:689: (certmanager) 
* Documentation/helm-reference.rst:701: (certmanager) 
* Documentation/helm-reference.rst:724: (extraDnsNames) 
* Documentation/helm-reference.rst:728: (extraIpAddresses) 
* Documentation/helm-values.rst:172: (certManagerIssuerRef) 
* Documentation/helm-values.rst:173: (certmanager) 
* Documentation/helm-values.rst:173: (certmanager) 
* Documentation/helm-values.rst:208: (extraDnsNames) 
* Documentation/helm-values.rst:212: (extraIpAddresses) 
* Documentation/helm-values.rst:580: (serviceAnnotations) 
* Documentation/helm-values.rst:660: (extraDnsNames) 
* Documentation/helm-values.rst:664: (extraIpAddresses) 
* Documentation/helm-values.rst:688: (certManagerIssuerRef) 
* Documentation/helm-values.rst:689: (certmanager) 
* Documentation/helm-values.rst:689: (certmanager) 
* Documentation/helm-values.rst:701: (certmanager) 
* Documentation/helm-values.rst:724: (extraDnsNames) 
* Documentation/helm-values.rst:728: (extraIpAddresses)

[nbusseneau]

This only changes documentation, running CI not needed, other checks are green. Marking as ready to merge.