e.g./i.e. have periods.

Replace the i.e. here with an e.g. as it appears to be giving an example, not
providing a definition

Author: coke

doc/Language/grammar_tutorial.pod6

@@ -198,13 +198,13 @@ To utilize these multimethods (here called proto-regexes) to constrain our comma
     =end code
 
 The 'sym' keyword is used to create the various proto-regex options. Each option
-is named (ie. sym<update>), and for that option's use, a special <sym> token is
+is named (e.g. sym<update>), and for that option's use, a special <sym> token is
 auto-generated, that is the case-sensitive string-literal of the name assigned.
 
 The <sym> token, as well as other user-defined tokens, may be used in the proto-
 regex option block to define the specific 'match condition'. Regex tokens are
 compiled forms, and once defined cannot subsequently be modified by adverb
-actions (eg. :i). Therefore, as it's auto-generated, the special <sym> token is
+actions (e.g. :i). Therefore, as it's auto-generated, the special <sym> token is
 useful only where an exact match of the option name is required.
 
 If, for one of the proto-regex options, a match condition occurs, then the whole