[DOCS] Fix Moving Avg Aggregation `deprecated` macro for Asciidoctor
[[search-aggregations-pipeline-movavg-aggregation]]
=== Moving Average Aggregation
+ifdef::asciidoctor[]
+deprecated:[6.4.0, "The Moving Average aggregation has been deprecated in favor of the more general <<search-aggregations-pipeline-movfn-aggregation,Moving Function Aggregation>>. The new Moving Function aggregation provides all the same functionality as the Moving Average aggregation, but also provides more flexibility."]
+endif::[]
+ifndef::asciidoctor[]
deprecated[6.4.0, The Moving Average aggregation has been deprecated in favor of the more general
<<search-aggregations-pipeline-movfn-aggregation,Moving Function Aggregation>>. The new Moving Function aggregation provides
all the same functionality as the Moving Average aggregation, but also provides more flexibility.]
+endif::[]
Given an ordered series of data, the Moving Average aggregation will slide a window across the data and emit the average
value of that window. For example, given the data `[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]`, we can calculate a simple moving
