fix: responsive youtube embed (closes #1167)

Jacky Zhao

2024-08-06 ca3943b5007ea7cb6a27bbf3e02648d5271231ea

 quartz/plugins/transformers/description.ts

@@ -61,6 +61,7 @@
                const currentSentence = sentence.endsWith(".") ? sentence : sentence + "."
                finalDesc.push(currentSentence)
                currentDescriptionLength += currentSentence.length
                sentenceIdx++
              }
            }