docs/libcurl: update "Added in" version for curl_easy_option*

Follow-up to 6ebe63fac2

docs/libcurl/curl_easy_option_by_id.3

@@ -19,7 +19,7 @@
 .\" * KIND, either express or implied.
 .\" *
 .\" **************************************************************************
-.TH curl_easy_option_by_id 3 "15 May 2020" "libcurl 7.71.0" "libcurl Manual"
+.TH curl_easy_option_by_id 3 "27 Aug 2020" "libcurl 7.73.0" "libcurl Manual"
 .SH NAME
 curl_easy_option_by_id - find an easy setopt option by id
 .SH SYNOPSIS
@@ -38,7 +38,7 @@ function as well.
 
 If libcurl has no option with the given id, this function returns NULL.
 .SH AVAILABILITY
-This function was added in libcurl 7.71.0
+This function was added in libcurl 7.73.0
 .SH RETURN VALUE
 A pointer to the curl_easyoption struct for the option or NULL.
 .SH "SEE ALSO"

docs/libcurl/curl_easy_option_by_name.3

@@ -19,7 +19,7 @@
 .\" * KIND, either express or implied.
 .\" *
 .\" **************************************************************************
-.TH curl_easy_option_by_name 3 "15 May 2020" "libcurl 7.71.0" "libcurl Manual"
+.TH curl_easy_option_by_name 3 "27 Aug 2020" "libcurl 7.73.0" "libcurl Manual"
 .SH NAME
 curl_easy_option_by_name - find an easy setopt option by name
 .SH SYNOPSIS
@@ -36,7 +36,7 @@ name comparison is made case insensitive.
 
 If libcurl has no option with the given name, this function returns NULL.
 .SH AVAILABILITY
-This function was added in libcurl 7.71.0
+This function was added in libcurl 7.73.0
 .SH RETURN VALUE
 A pointer to the curl_easyoption struct for the option or NULL.
 .SH "SEE ALSO"

docs/libcurl/curl_easy_option_next.3

@@ -19,7 +19,7 @@
 .\" * KIND, either express or implied.
 .\" *
 .\" **************************************************************************
-.TH curl_easy_option_next 3 "15 May 2020" "libcurl 7.71.0" "libcurl Manual"
+.TH curl_easy_option_next 3 "27 Aug 2020" "libcurl 7.73.0" "libcurl Manual"
 .SH NAME
 curl_easy_option_next - iterate over easy setopt options
 .SH SYNOPSIS
@@ -65,7 +65,7 @@ information about what argument type they want.
 If the \fBCURLOT_FLAG_ALIAS\fP bit is set in the flags field, it means the
 name is provided for backwards compatibility as an alias.
 .SH AVAILABILITY
-This function was added in libcurl 7.71.0
+This function was added in libcurl 7.73.0
 .SH RETURN VALUE
 A pointer to the curl_easyoption struct for the next option or NULL if no more
 options.