fix(renderer): image alt without separators

[xcoulon]

replace underscores and hyphens with spaces

Fixes #1019

Signed-off-by: Xavier Coulon xcoulon@redhat.com

[github-actions]

Comparing with master branch:

name                                          old time/op    new time/op    delta
RealDocumentProcessing/demo.adoc-2              22.6ms ± 5%    23.0ms ± 8%    ~     (p=0.481 n=10+10)
RealDocumentProcessing/vertx-examples.adoc-2    66.7ms ± 3%    66.9ms ± 5%    ~     (p=0.912 n=10+10)
RealDocumentProcessing/mocking.adoc-2           59.9ms ± 4%    59.7ms ± 4%    ~     (p=0.863 n=9+9)

name                                          old alloc/op   new alloc/op   delta
RealDocumentProcessing/demo.adoc-2              9.34MB ± 0%    9.34MB ± 0%    ~     (p=0.684 n=10+10)
RealDocumentProcessing/vertx-examples.adoc-2    26.0MB ± 0%    26.0MB ± 0%  -0.00%  (p=0.046 n=9+8)
RealDocumentProcessing/mocking.adoc-2           21.7MB ± 0%    21.7MB ± 0%    ~     (p=0.515 n=10+8)

name                                          old allocs/op  new allocs/op  delta
RealDocumentProcessing/demo.adoc-2                113k ± 0%      113k ± 0%    ~     (p=0.721 n=10+10)
RealDocumentProcessing/vertx-examples.adoc-2      332k ± 0%      332k ± 0%  -0.00%  (p=0.032 n=10+6)
RealDocumentProcessing/mocking.adoc-2             328k ± 0%      328k ± 0%    ~     (p=0.638 n=10+7)

Comparing with latest release:

name                                          old time/op    new time/op    delta
RealDocumentProcessing/demo.adoc-2              22.6ms ± 5%    20.8ms ± 3%   -7.91%  (p=0.000 n=10+10)
RealDocumentProcessing/vertx-examples.adoc-2    66.7ms ± 3%    57.1ms ± 3%  -14.42%  (p=0.000 n=10+10)
RealDocumentProcessing/mocking.adoc-2           59.9ms ± 4%    57.7ms ± 2%   -3.59%  (p=0.001 n=9+10)

name                                          old alloc/op   new alloc/op   delta
RealDocumentProcessing/demo.adoc-2              9.34MB ± 0%    8.85MB ± 0%   -5.21%  (p=0.000 n=10+9)
RealDocumentProcessing/vertx-examples.adoc-2    26.0MB ± 0%    24.0MB ± 0%   -7.92%  (p=0.000 n=9+10)
RealDocumentProcessing/mocking.adoc-2           21.7MB ± 0%    21.6MB ± 0%   -0.52%  (p=0.000 n=10+10)

name                                          old allocs/op  new allocs/op  delta
RealDocumentProcessing/demo.adoc-2                113k ± 0%      106k ± 0%   -6.02%  (p=0.000 n=10+8)
RealDocumentProcessing/vertx-examples.adoc-2      332k ± 0%      305k ± 0%   -8.18%  (p=0.000 n=10+10)
RealDocumentProcessing/mocking.adoc-2             328k ± 0%      326k ± 0%   -0.54%  (p=0.000 n=10+10)

[codecov]

Codecov Report

Merging #1025 (5b2069d) into master (ceef387) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1025   +/-   ##
=======================================
  Coverage   80.27%   80.28%           
=======================================
  Files          86       86           
  Lines        7016     7019    +3     
=======================================
+ Hits         5632     5635    +3     
  Misses        862      862           
  Partials      522      522