core: improve package doc comments for the documentation generator

core/encoding/varint/leb128.odin

@@ -6,8 +6,6 @@
 		Jeroen van Rijn: Initial implementation.
 */
 
-// package varint implements variable length integer encoding and decoding using
-// the LEB128 format as used by DWARF debug info, Android .dex and other file formats.
 package encoding_varint
 
 // In theory we should use the bigint package. In practice, varints bigger than this indicate a corrupted file.
@@ -160,4 +158,4 @@ encode_ileb128 :: proc(buf: []u8, val: i128) -> (size: int, err: Error) {
 		buf[size - 1] = u8(low)
 	}
 	return
-}
+}