index.html: scale down headers by one

doc/man/index.html

@@ -28,9 +28,9 @@
   </center>
   <hr>
   <iframe align="right" width="560" height="315" src="https://www.youtube.com/embed/cYhZ7myXyyg" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
-  <h1><a href="https://nick-black.com/dankwiki/index.php/Notcurses">notcurses</a> man pages (v2.0.8)</h1>
+  <h2><a href="https://nick-black.com/dankwiki/index.php/Notcurses">notcurses</a> man pages (v2.0.8)</h2>
   <a href="notcurses.3.html">notcurses(3)</a>—a blingful TUI library<br/>
-  <h2>Executables (section 1)</h2>
+  <h3>Executables (section 1)</h3>
   <a href="ncneofetch.1.html">ncneofetch</a>—generate low-effort posts for r/unixporn<br/>
   <a href="notcurses-demo.1.html">notcurses-demo</a>—shows off some notcurses features<br/>
   <a href="notcurses-direct-pydemo.1.html">notcurses-direct-pydemo</a>—validates the Python direct-mode wrappers<br/>
@@ -39,7 +39,7 @@
   <a href="notcurses-tester.1.html">notcurses-tester</a>—unit test driver<br/>
   <a href="notcurses-tetris.1.html">notcurses-tetris</a>—Tetris in a terminal<br/>
   <a href="notcurses-view.1.html">notcurses-view</a>—renders images and video to a terminal<br/>
-  <h2>C library (section 3)</h2>
+  <h3>C library (section 3)</h3>
   <div style="float:left">
    <a href="notcurses_capabilities.3.html">notcurses_capabilities</a>—runtime capability detection<br/>
    <a href="notcurses_cell.3.html">notcurses_cell</a>—operations on <tt>cell</tt> objects<br/>

src/lib/notcurses.c

@@ -855,7 +855,7 @@ init_banner(const notcurses* nc){
       }
     }
     if(!notcurses_canutf8(nc)){
-      fprintf(stderr, "\n Warning! Encoding is not UTF-8.\n");
+      fprintf(stderr, "\n Warning! Encoding is not UTF-8; output may be degraded.\n");
     }
     if(nc->tcache.sgr0){
       term_emit("sgr0", nc->tcache.sgr0, stderr, true);