Update public/components/common/helpers/ppl_docs/language_structure/i…

…dentifiers.ts

Co-authored-by: Nathan Bower <nbower@amazon.com>
Signed-off-by: Melissa Vagi <vagimeli@amazon.com>

public/components/common/helpers/ppl_docs/language_structure/identifiers.ts

@@ -52,7 +52,7 @@ A delimited identifier is an identifier enclosed in backticks \`\` that contain
 
 Common use cases for delimited identifiers include the following:
 
-- Identifiers that coincide with reserved keywords
+- Identifiers that coincide with reserved keywords.
 - Identifiers that contain a dot \`.\` or a dash \`-\` need to be distinguished from regular identifiers with qualifiers. Enclosing such identifiers in backticks \`\` allows the parser to differentiate them from qualified identifiers and enables date information within index names.
 - Identifiers with special characters, as OpenSearch permits the use of special characters, including Unicode characters, in index names.