Some reformatting

doc/Type/Str.pod6

@@ -643,7 +643,7 @@ Between the C<%> and the format letter, you may specify several
 additional attributes controlling the interpretation of the format. In
 order, these are:
 
-B<format parameter index>
+B<Format parameter index>
 
 An explicit format parameter index, such as C<2$>. By default,
 C<sprintf> will format the next unused argument in the list, but this
@@ -652,7 +652,7 @@ allows you to take the arguments out of order:
   sprintf '%2$d %1$d', 12, 34;      # OUTPUT: «34 12␤»
   sprintf '%3$d %d %1$d', 1, 2, 3;  # OUTPUT: «3 1 1␤»
 
-B<flags>
+B<Flags>
 
 One or more of:
 
@@ -696,7 +696,7 @@ When the C<#> flag and a precision are given in the C<%o> conversion, the necess
   say sprintf '<%#.0o>', 0;        # OUTPUT: «<>␤» zero precision and value 0 results in no output!
   say sprintf '<%#.0o>', 0o1       # OUTPUT: «<01>␤»
 
-B<vector flag>
+B<Vector flag>
 
 This flag tells Perl 6 to interpret the supplied string as a vector of
 integers, one for each character in the string. Perl 6 applies the
@@ -716,7 +716,7 @@ join string using something like C<*2$v>; for example:
           @addr[1..3], ":";
 =end code
 
-B<(minimum) width>
+B<(Minimum) Width>
 
 Arguments are usually formatted to be only as wide as required to
 display the given value. You can override the width by putting a
@@ -734,7 +734,7 @@ from a specified argument (e.g., with C<*2$>):
 If a field width obtained through C<*> is negative, it has the same
 effect as the C<-> flag: left-justification.
 
-B<precision, or maximum width>
+B<Precision, or maximum width>
 
 You can specify a precision (for numeric conversions) or a maximum
 width (for string conversions) by specifying a C<.> followed by a
@@ -766,8 +766,8 @@ For integer conversions, specifying a precision implies that the
 output of the number itself should be zero-padded to this width, where
 the C<0> flag is ignored:
 
-(Note that this feature currently works for unsigned integer conversions, but not
-for signed integer.)
+(Note that this feature currently works for unsigned integer conversions, but
+not for signed integer.)
 
   =begin code :skip-test
   sprintf '<%.6d>', 1;      # <000001>
@@ -811,7 +811,7 @@ no precision at all:
   sprintf '<%.*d>',  0, 0;          # RESULT: «<>␤»
   sprintf '<%.*d>', -1, 0;          # RESULT: «<0>␤»
 
-B<size>
+B<Size>
 
 For numeric conversions, you can specify the size to interpret the
 number as using C<l>, C<h>, C<V>, C<q>, C<L>, or C<ll>. For integer
@@ -834,7 +834,7 @@ used to build Perl 6:
    z           | interpret integer as C type "size_t"
 =end table
 
-B<order of arguments>
+B<Order of arguments>
 
 Normally, C<sprintf> takes the next unused argument as the value to
 format for each format specification. If the format specification uses