Update Helm install command for ExternalDNS

[ivreone]

I hereby agree to the terms of the CLA available at: https://yandex.ru/legal/cla/?lang=ru

Description of changes:
Исправлены названия переменных и название директории с чартом

[yfm-team]

Возникла ошибка. Пожалуйста, свяжитесь с администратором и укажите идентификатор запроса: 6382f694-c164-479b-8ed8-e730a6701e90

[yfm-team]

Commit: 6be0308
Проверьте результат: RU.
Check the result: EN.
Есть ошибки. Проверьте результат и исправьте их:

⚠️ Variable version.name not found in ru/managed-kubernetes/concepts/k8s-supported-versions.md
⚠️ Variable version.rapid not found in ru/managed-kubernetes/concepts/k8s-supported-versions.md
⚠️ Variable version.regular not found in ru/managed-kubernetes/concepts/k8s-supported-versions.md
⚠️ Variable version.stable not found in ru/managed-kubernetes/concepts/k8s-supported-versions.md
⚠️ Variable version.deprecated not found in ru/managed-kubernetes/concepts/k8s-supported-versions.md
⚠️ Deprecated: use align="..." inside cell attributes "::{align="..."}" instead of .cell-align-* class in cell content "{ }"
⚠️ ru/datalens/pricing-changes.md: 72: YFM020 / invalid-yfm-directive YFM directive is unknown or has invalid syntax [Unknown or invalid directive '{% calc [currency=RUB] (10 + 5 + 3) × 990 %}'] [Context: "Общая стоимость за май составит (10 + 5 + 3) × 990 ₽ = {% calc [currency=RUB] (10 + 5 + 3) × 990 %}"]
⚠️ ru/datalens/pricing-changes.md: 124: YFM020 / invalid-yfm-directive YFM directive is unknown or has invalid syntax [Unknown or invalid directive '{% calc [currency=RUB] (10 + 5 + 3) × (990 / 2) × (8 / 31) %}'] [Context: "Общая стоимость за декабрь составит (10 + 5 + 3) × (990 ₽ / 2) × (8 / 31) = {% calc [currency=RUB] (10 + 5 + 3) × (990 / 2) × (8 / 31) %}"]
⚠️ ru/datalens/pricing.md: 113: YFM020 / invalid-yfm-directive YFM directive is unknown or has invalid syntax [Unknown or invalid directive '{% calc [currency=RUB] (10 + 5 + 3) × 990 %}'] [Context: "Общая стоимость за май составит (10 + 5 + 3) × 990 ₽ = {% calc [currency=RUB] (10 + 5 + 3) × 990 %}"]
⚠️ Variable version.name not found in en/managed-kubernetes/concepts/k8s-supported-versions.md
⚠️ Variable version.rapid not found in en/managed-kubernetes/concepts/k8s-supported-versions.md
⚠️ Variable version.regular not found in en/managed-kubernetes/concepts/k8s-supported-versions.md
⚠️ Variable version.stable not found in en/managed-kubernetes/concepts/k8s-supported-versions.md
⚠️ Variable version.deprecated not found in en/managed-kubernetes/concepts/k8s-supported-versions.md

[yfm-team]

Commit: c6d351b
Проверьте результат: RU.
Check the result: EN.
Есть ошибки. Проверьте результат и исправьте их:

⚠️ ru/datalens/pricing-changes.md: 72: YFM020 / invalid-yfm-directive YFM directive is unknown or has invalid syntax [Unknown or invalid directive '{% calc [currency=RUB] (10 + 5 + 3) × 990 %}'] [Context: "Общая стоимость за май составит (10 + 5 + 3) × 990 ₽ = {% calc [currency=RUB] (10 + 5 + 3) × 990 %}"]
⚠️ ru/datalens/pricing-changes.md: 124: YFM020 / invalid-yfm-directive YFM directive is unknown or has invalid syntax [Unknown or invalid directive '{% calc [currency=RUB] (10 + 5 + 3) × (990 / 2) × (8 / 31) %}'] [Context: "Общая стоимость за декабрь составит (10 + 5 + 3) × (990 ₽ / 2) × (8 / 31) = {% calc [currency=RUB] (10 + 5 + 3) × (990 / 2) × (8 / 31) %}"]
⚠️ ru/datalens/pricing.md: 113: YFM020 / invalid-yfm-directive YFM directive is unknown or has invalid syntax [Unknown or invalid directive '{% calc [currency=RUB] (10 + 5 + 3) × 990 %}'] [Context: "Общая стоимость за май составит (10 + 5 + 3) × 990 ₽ = {% calc [currency=RUB] (10 + 5 + 3) × 990 %}"]