fix: filtering by dates in search docs is outdated

Author: sywhb

docs/es/using/search.md

@@ -60,9 +60,9 @@ Puede filtrar sus búsquedas en función de la hora en que se guardaron o public
 
 Por ejemplo:
 
-- `saved:2022-04-21.._` Todos los artículos guardados desde 2022-04-21
+- `saved:2022-04-21..*` Todos los artículos guardados desde 2022-04-21
 - `published:2020-01-01..2022-02-02` Todos los artículos publicados entre 2020-01-01 y 2022-02-02
-- `published:_..2020-01-01` Todos los artículos publicados antes del 2020-01-01
+- `published:*..2020-01-01` Todos los artículos publicados antes del 2020-01-01
 
 ## Ordenación
 

docs/ko/using/search.md

@@ -63,9 +63,9 @@ You can filter your searches based on the time they were saved or published usin
 
 For Example:
 
-- `saved:2022-04-21.._` All items saved since 2022-04-21
+- `saved:2022-04-21..*` All items saved since 2022-04-21
 - `published:2020-01-01..2022-02-02` All items published between 2020-01-01 and 2022-02-02
-- `published:_..2020-01-01` All items published before 2020-01-01
+- `published:*..2020-01-01` All items published before 2020-01-01
 
 ## Sorting
 

docs/using/search.md

@@ -86,9 +86,9 @@ You can filter your searches based on the time they were saved or published usin
 
 For Example:
 
-- `saved:2022-04-21.._`: All items saved since 2022-04-21
+- `saved:2022-04-21..*`: All items saved since 2022-04-21
 - `published:2020-01-01..2022-02-02`: All items published between 2020-01-01 and 2022-02-02
-- `published:_..2020-01-01`: All items published before 2020-01-01
+- `published:*..2020-01-01`: All items published before 2020-01-01
 
 ## Filtering by language
 

docs/zh/using/search.md

@@ -61,9 +61,9 @@ The `type:` 筛选器用于根据类型筛选搜索结果。
 
 例如:
 
-- `saved:2022-04-21.._` 自 2022-04-21 以来保存的所有文章。
+- `saved:2022-04-21..*` 自 2022-04-21 以来保存的所有文章。
 - `published:2020-01-01..2022-02-02` 在 2020-01-01 至 2022-02-02 之间发布的所有文章。
-- `published:_..2020-01-01` 在 2020-01-01 之前发布的所有文章。
+- `published:*..2020-01-01` 在 2020-01-01 之前发布的所有文章。
 
 ## 排序