fix quality warnings

Author: uchitsa

eo-runtime/src/main/eo/org/eolang/txt/text.eo

@@ -31,6 +31,7 @@
 +version 0.0.0
 
 # Text.
+# A sequence of characters representing words, sentences, or data.
 [origin] > text
   origin > @
   # Check that all signs in string are numbers or letters.