field_errors_block.html: insert missing space between attributes

[cheuberg]

No description provided.

[smithdc1]

Thanks!

Not sure what to do about improving tests for this. The Python HTML parser seems quite permissive and is splitting the attributes.

In [2]: from html.parser import HTMLParser
   ...: 
   ...: class AttrPrinter(HTMLParser):
   ...:     def handle_starttag(self, tag, attrs):
   ...:         print(f"Tag: <{tag}>")
   ...:         for name, value in attrs:
   ...:             print(f"  attr: {name!r} = {value!r}")
   ...: 
   ...: p = AttrPrinter()
   ...: p.feed('<div id="foo_error"class="invalid-feedback">')
Tag: <div>
  attr: 'id' = 'foo_error'
  attr: 'class' = 'invalid-feedback'